.

[rugged kernel]

use khanacademy

[true cairn]

There are several open (free) textbooks that you can use:
(1.) https://open.umn.edu/opentextbooks/
(2.) https://openstax.org/subjects/math

When you review any topic in a textbook, solve the problems and review the answers at the back of the book.
To solve more problems from standardized tests/exams and check your solution, this is a valuable resource that you can use:
(3.) https://successexams.appspot.com/
Contents are updated frequently so check back often for more questions and solutions.

Feel free to ask questions on any topic that you do not understand.
Feel free to share with others.

(4.) Also, check out the section on https://discord.com/channels/268882317391429632/716264872018706443

[dreamy tangle]

What books are suitable for a beginner in algebra?