I've taken HS Algebra and College Algebra (basically the same thing though) before but I've since then forgotten basically all of it. I learned for the exams, not for retention because I never intended on taking another math course again. Now here I sit, dreaming of becoming a dentist and now face Calculus 1/2 and Physics 1/2 in the near future. Based on research, it would appear that my success or failure in Calculus 1 will depend heavily on my mastery of Algebra and Trigonometry. I have one semester before I transfer to a 4 year university to take Calculus 1 so that's how much time I have to prepare. I was just wondering what's the best way for me to master Algebra and Trigonometry on my own in one semester. - Is Khan Academy's Algebra 1/2 and Trigonometry sufficient preparation for Calculus 1? - Are there any other online resources you'd recommend? - And just out of curiosity, what was your experience like in trying to ace Calculus 1. Did you have a good foundation in Algebra/Trigonometry before going into it? How did you do? What factors do you think played into your success or failure? I'm going to study my butt off, I'm definitely willing to put in the man hours and hard work, but I'm worried that Calculus will be one of those courses where hours of studying won't do much if you just don't have the solid foundations in math that took years to build. Sorry for the wall of text, thanks for any replies!