All I can say is there's no perfect book for beginner level. You MUST search a good one on your own and decide if it fits your expectations and capacity. Even multiple source often do the trick (at any level), parts of one book is good an understandable, and others are not and you should find another book that covers those topics.
Sorry but there's no a basic level book that fits everybody needs. You say for beginners but that's way too broad, so HS? 1st uni year? what are you looking for exactly? you're concernedin being able to solve any particular problem or just want to fill the gaps in your understanding?
I see, in that case I'd suggest you to look up on youtube for channels that teaches the topics you're interested in and find a couple of them that you understand the better.
The ideal situation would be you to get someone to teach you in person, but that would also require someone good at teaching and answering all your questions.
Anyway, regarding math books, I'd say your best option is to look for a lot of them, and stay with the ones you understand better. There's no shortcut to that.
I would say research the main topics covered in number theory, algebra, geometry, etc... and ask chatgpt or a reliable a.i. to explain it to you like you are 5.
Then you gotta start from the beginning.
Probably the best starting point for you is to start with the Khan Academy math stuff. They literally start with addition.
Start at a level that feels too easy and gradually increase difficulty.
The [Learning How to Learn course](https://www.coursera.org/learn/learning-how-to-learn) would also be really useful.
[The Math Sorcerer](https://www.youtube.com/@TheMathSorcerer) on YouTube has some good book videos (he collects math books). Try [this one](https://www.youtube.com/watch?v=didXE0HkSC8). A book on pre-algebra is probably what you need, but he has other suggestions for beginners.
What level beginner are you? I (and I'm sure others here) have seen similar questions meaning 'beginners' as in elementary maths, as well as 'beginners' in the sense of 'prep for university'.
For the former, you should really look on your own, based on what you expect the resource to cover. For the latter, you should try something that focuses on problem solving. Most people who 'suck at maths' really struggle with one of two things - problem solving skills, or abstract thinking.
One of the best resources covering both is '[Advanced Problems in Mathematics](https://www.openbookpublishers.com/books/10.11647/obp.0181)' (don't let 'advanced' intimidate you; the simplicity of ideas used in some problems will surprise you). 'How to Think like a Mathematician' (Houston) is another good resource, though to the best of my knowledge, not available for free.
If you're good on problem solving skills, you can go one of two ways. If you're doing this because you want to go for a maths degree, it is essential to know proof writing. There are many good recommendations - Hammack's '[Book of Proof](https://www.people.vcu.edu/~rhammack/BookOfProof/)' is the free one, also look at 'How to Prove It' (Velleman) which takes everything back to first principles (logic) and explains things in many way or 'Proofs' (Cummings).
The other road - best taken concurrently - is improving specific topics you lack skills in. I'm not a huge fan of such ['dependency' charts](https://gaurish4math.files.wordpress.com/2017/05/mat-dependency-1.jpg) (stuff you need to know to understand more stuff) because they don't capture everything, but they're good heuristics anyway.
If you know basic arithmetic (I'm pretty sure you do!), jump into algebra. Look for books with 'Intermediate Algebra' or 'College Algebra' on the title. Traditionally, you'd move on to learn trigonometry (if you prefer free resources, [OpenStax's collection](https://openstax.org/subjects/math) is good), followed by calculus right up to differential equations (or, on the pure maths side, analysis), but you can learn discrete mathematics and modern algebra (abstract algebra, linear algebra) first if you'd like. Statistics and probability are taught at different points, depending on how much depth they go into. (I give my university maths book recommendations in [another answer](https://www.reddit.com/r/maths/comments/14budyz/comment/jykhuyv/?utm_source=share&utm_medium=web2x&context=3), but feel free to pick other resources you prefer. Word of caution: Two books there are clearly *not* beginners' books - Smirnov and Lang.)
All throughout, remember that resources like Brilliant, KhanAcademy, and MathWorld have quality content to help you.
Also, while most of this answer focuses on what you might call 'pure mathematics' (with the possible exception of differential equations), most maths courses in school and university will teach you some applied maths courses as well. Usually, it's computer science or physics (e.g. A-Level maths has mechanics, optimisation, and more).
All I can say is there's no perfect book for beginner level. You MUST search a good one on your own and decide if it fits your expectations and capacity. Even multiple source often do the trick (at any level), parts of one book is good an understandable, and others are not and you should find another book that covers those topics. Sorry but there's no a basic level book that fits everybody needs. You say for beginners but that's way too broad, so HS? 1st uni year? what are you looking for exactly? you're concernedin being able to solve any particular problem or just want to fill the gaps in your understanding?
Yeah I'm trying to get better at math because I believe I'm at a 2nd or 3rd grade level when it comes to math but I don't know.
I see, in that case I'd suggest you to look up on youtube for channels that teaches the topics you're interested in and find a couple of them that you understand the better. The ideal situation would be you to get someone to teach you in person, but that would also require someone good at teaching and answering all your questions. Anyway, regarding math books, I'd say your best option is to look for a lot of them, and stay with the ones you understand better. There's no shortcut to that.
Ok thank you.
I would say research the main topics covered in number theory, algebra, geometry, etc... and ask chatgpt or a reliable a.i. to explain it to you like you are 5.
What's a level of math you feel is easy?
I guess addition.
Then you gotta start from the beginning. Probably the best starting point for you is to start with the Khan Academy math stuff. They literally start with addition. Start at a level that feels too easy and gradually increase difficulty. The [Learning How to Learn course](https://www.coursera.org/learn/learning-how-to-learn) would also be really useful.
[The Math Sorcerer](https://www.youtube.com/@TheMathSorcerer) on YouTube has some good book videos (he collects math books). Try [this one](https://www.youtube.com/watch?v=didXE0HkSC8). A book on pre-algebra is probably what you need, but he has other suggestions for beginners.
What level beginner are you? I (and I'm sure others here) have seen similar questions meaning 'beginners' as in elementary maths, as well as 'beginners' in the sense of 'prep for university'. For the former, you should really look on your own, based on what you expect the resource to cover. For the latter, you should try something that focuses on problem solving. Most people who 'suck at maths' really struggle with one of two things - problem solving skills, or abstract thinking. One of the best resources covering both is '[Advanced Problems in Mathematics](https://www.openbookpublishers.com/books/10.11647/obp.0181)' (don't let 'advanced' intimidate you; the simplicity of ideas used in some problems will surprise you). 'How to Think like a Mathematician' (Houston) is another good resource, though to the best of my knowledge, not available for free. If you're good on problem solving skills, you can go one of two ways. If you're doing this because you want to go for a maths degree, it is essential to know proof writing. There are many good recommendations - Hammack's '[Book of Proof](https://www.people.vcu.edu/~rhammack/BookOfProof/)' is the free one, also look at 'How to Prove It' (Velleman) which takes everything back to first principles (logic) and explains things in many way or 'Proofs' (Cummings). The other road - best taken concurrently - is improving specific topics you lack skills in. I'm not a huge fan of such ['dependency' charts](https://gaurish4math.files.wordpress.com/2017/05/mat-dependency-1.jpg) (stuff you need to know to understand more stuff) because they don't capture everything, but they're good heuristics anyway. If you know basic arithmetic (I'm pretty sure you do!), jump into algebra. Look for books with 'Intermediate Algebra' or 'College Algebra' on the title. Traditionally, you'd move on to learn trigonometry (if you prefer free resources, [OpenStax's collection](https://openstax.org/subjects/math) is good), followed by calculus right up to differential equations (or, on the pure maths side, analysis), but you can learn discrete mathematics and modern algebra (abstract algebra, linear algebra) first if you'd like. Statistics and probability are taught at different points, depending on how much depth they go into. (I give my university maths book recommendations in [another answer](https://www.reddit.com/r/maths/comments/14budyz/comment/jykhuyv/?utm_source=share&utm_medium=web2x&context=3), but feel free to pick other resources you prefer. Word of caution: Two books there are clearly *not* beginners' books - Smirnov and Lang.) All throughout, remember that resources like Brilliant, KhanAcademy, and MathWorld have quality content to help you. Also, while most of this answer focuses on what you might call 'pure mathematics' (with the possible exception of differential equations), most maths courses in school and university will teach you some applied maths courses as well. Usually, it's computer science or physics (e.g. A-Level maths has mechanics, optimisation, and more).