Migrating from Ubuntu

Use Google and search for something like "switching from Ubuntu to OS X." Not that difficult.

However, a more constructive approach would probably be to search for whatever issue you're having at the time to see how it works. In this case you could search for "OS X Maximize button" which would yield this helpful and informative website:

http://www.switchingtomac.com/tutorials/make-the-os-x-maximize-button-work-like-windows/

 

There is no way to fully maximize, so a developer created BetterSnapTool which copies Windows 7 way of anchoring the window to the top of the screen to fully maximize it, to the side to make it occupy half of the screen (so as to have 2 windows side by side).

It won't take 6 months, trust me. It's as easy as it gets! If you're used to using commands, the homologue on Mac OS X is "Terminal"

 

Drag your window to the top left of the screen, then click on the lines at the bottom right of the page and frag it to the bottom right. Once you set that window size, it will stay that way every time you open it.
I switched from ubuntu as well, I bought a book on snow leopard, it made the transition pretty easy.