https://www.khanacademy.org https://www.khanacademy.org is a good place to start. Otherwise, you can take a look here https://en.wikipedia.org/wiki/List_of_math

https://www.khanacademy.org https://www.khanacademy.org is a good place to start. Otherwise, you can take a look here https://en.wikipedia.org/wiki/List_of_mathematical_symbols https://en.wikipedia.org/wiki/List_of_mathematical_symbols. There are free calculus courses available on https://coursera.org https://coursera.org that you can start on, otherwise a local introductory math program might be available to you?