download some program with a serial. I like 3ds Max it has one of the best user interfaces I think. But it lacks in other areas. All the programs seems to have their perks and downfalls. There is 3ds Max, Maya, Lightwave, XSI, Z-brush, Rhino, Wings, Cinema 4D, Solidworks and tons more.
Then go to CGtalk.com, Threedy.com, 3dtotal.com, CGchat.com and like a billion more sites that you can go to and find tutorials and read what other people are doing/going through.
That's how I know everything that I know, hope that helps.