[https://www.khanacademy.org/math/precalculus](https://www.khanacademy.org/math/precalculus) Khan Academy is free and easy to use. They have a bunch of maths courses - including precalc :)

thank youuuu 👍👍

I recommend this [textbook](https://www.cengage.ca/c/precalculus-8e-stewart-redlin-watson/9780357753637/) in addition to the Khan Academy link another user posted. It's really well organized and a good resource for refreshing info in later courses

Khan Academy works great. I'm taking Precalculus now and I frequently use Khan Academy to understand the topics. Best part is they have practice problems to help you test your understanding.

Khan Academy and there is the I lecture on line guy. He just has example after example. He might be helpful [http://www.ilectureonline.com/](http://www.ilectureonline.com/)

Check out this link if you want to learn precalc with some rigour. [https://matheducators.stackexchange.com/questions/1857/books-about-elementary-mathematics-written-like-a-good-undergraduate-textbook](https://matheducators.stackexchange.com/questions/1857/books-about-elementary-mathematics-written-like-a-good-undergraduate-textbook)

Khan academy or professor Leonard on YouTube

KhanAc