Thanks for all of the information! I tried to learn Calculus once, but it was too difficult for me to understand, and I felt like I wasn't learning everything I needed to progress to the next step. I felt like I was just doing random lessons.
I'm teaching myself some algebra using Paul's Online Math Notes. I've been doing very well, (I understand the concepts, and I do well on Practice/Assignment Problems) but I would like to know how long it will be until I get to Calculus I? What are the hardest concepts to grasp when learning this...