Hi There folks!!

And I thought owning a MAC was the way to go....somebody help me please to understand how this works.
I would like to download programs, but of course something that only works on MAC.
Can I unzip files with MAC?
I tried to install MACZIP, but whatever I downloaded, does not open (.zip file)

Is there a way to select MC only downloads?

So, basically, how to get it on the comp. and then how to get it working, I know I am asking a lot, but thanks if any help comes my way.

Sjef