some help on where to start

hello everyone.

i've decided, after much procrastination, to start reviewing all my mathematical knowledge from algebra to calculus and beyond. while i have taken college math courses (calculus, diff eqs, linear algebra, probability) and thought i had decent knowledge, browsing the forums made me realize how little i know, how much i've forgotten, and how i didn't have a good grasp on things i thought i knew.

can anyone give me some advice on what textbooks to purchase or internet resources i can use to get a thorough and clear to understand lessons from algebra to calculus (and beyond)?

thanks for your help!!!