sup /sci/ - I've made a post like this many times in the past to the point where I'm exhausted to even type it again but whatever. I don't want to shit up the board with a retard 'plshelpme' blogpost, so i'll try to make it concise. I'm a 25yr old loser. absolutely horrid academic history, as in, barely graduated high school and barely graduated community college with liberal arts degree. "Not dumb just lazy" type. I'm just about a little below average at all things, but not amazing at any, that is, when I apply myself.

My question is this: I want to work my ass off and study something related to math or physics, or just some sort of science. Right now, I know about as much math as a lazy 6th grader. I'm excellent with arithmetic, and I know very very very basic algebra, meaning I can solve for x with things like 5x+10=20. Where should I start? I've tried Khan Academy but I keep jumping back and forth. I start in arithmetic/pre-algebra and it's too easy and I feel bored, then I jump over to Algebra I & II and it's too far ahead for me, don't have the prerequisite knowledge.

TL;DR what resources to start from a middle school level in mathematics if I want to learn quickly? I'd like to be able to do pre-calculus in the shortest amount of time possible, as in, I went in over my head and took a precalc class right now and I'm like a fish out of water.

I really just want to get my foundation laid out and cover all bases. I keep jumping back and forth in KA because I feel like I'm gonna miss something, but I just can't figure out where to start. I'm also worried about missing something in the middle of those dozens of boring lessons that i'll end up actually needing in the future.

I've found this: http://djm.cc/library/Algebra_Elementary_Text-Book_Part_I_Chrystal_edited.pdf
what do you guys think of this? is it too outdated? does it cover EVERYTHING i need to know about algebra?