Mac Forums

First of all, I need those things for Recreation, surfing the Web, E-Mailing, Facebook-ing, and Twitter-ing.
And of course, I also need them for SCHOOLWORK.

I have a question for these 3, can I do projects with them, then print them with any printers?
Which should I choose?

Any benefits or disadvantages for those 3?
I have so many questions, but thanks.