good math books
yoshimo111: http://www.thatquiz.org/
for practice problems.http://en.wikipedia.org/wiki/Mathomatic
an open source math solver, will also output answers to programming code, can solve polynomials, do calculus, trig...etc. You can use it to check your answers.http://www.math.com/
the website has a lot of topics.You don't neccessarily 'need' a textbook. You can probably find the information you seek all online. If you have any questions you can ask yahoo answers.http://tutorial.math.lamar.edu/links.aspx
http://etc.usf.edu/math/index.htm
an overwhelming list of math sites. SOS math has worked well at helping me in the past.