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The last time I studied mathematics and algebra was six years ago. I've since forgotten everything except quadratic equations, trigonometric functions and other things at the same level. Now I want to relearn all this: combinatorics, linear algebra, probability theory. I'm looking at articles in wikipedia, and don't understand anything except the basics. Trying to understand a topic, I dig deeper and deeper into wikipedia and after a while, I can't even remember where I started.

So my question: what things I must learn for first steps?

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write and draw (while reading) –  Berci Oct 3 '12 at 8:08
    
hm..so simple advice, but I thinks that was realy good idea. Thanks) –  AlexCi Oct 3 '12 at 8:09
    
Consider buying or borrowing a book from the library on the subject and read through it. Take time to do the exercises. –  zundarz Oct 3 '12 at 8:44
    
I somewhat edited your post. If you feel I've altered your meaning, please feel free to revert to the original. Welcome to the site! –  Rick Decker Oct 3 '12 at 13:36
    
Thanks, my english not so good) –  AlexCi Oct 4 '12 at 6:37

2 Answers 2

up vote 4 down vote accepted

If you need the basics, perhaps a free MOOC (massive open online course) and even Khan Academy might me a nice option to go:

https://www.coursera.org/category/math

http://www.khanacademy.org/

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Yes! This is what I was looking for! –  AlexCi Oct 4 '12 at 6:39

Wikipedia can be useful (sometimes very useful) for filling gaps in knowledge when you already have some background. But it is pretty useless as a place to begin (it often isn't even very good at giving pointers to good textbooks).

We live in a golden age for maths textbooks at different levels: there are a lot of quite wonderful books out there, written by experienced teachers, and often polished over a number of editions. Get yourself to a good library and see what is available that meets your needs and interests. Different books even at the same level will suit different readers, so find a book that looks as if it will work for you. Then borrow it, read it slowly and carefully, doing some of the exercises as you go along.

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