This web-site will give you an overview:
You will also find the links to the websites of the different distributions.
There you will find the documentation and further info.
I don't use an Office-Suite or "whatever-Adobe-does", but in general you will find the applications that you need.
Most of Microsoft-software you will also find as a free version for Microsoft here:
If i should recommend a distribution for starters i would say one of those:
Debian, Fedora, OpenSuse, PCLinuxOs. Perhaps more.
Of those Debian is said to be difficult, and hence most people recommend Ubuntu instead
(it doesn't come as an installable live-CD, with is kind of a drawback too, at least for beginners).