Ok I'm new so I'm sorry if I'm breaking any rules.I just downloaded and learned about LS and I'm havin some trouble with downloading it.When I download it I get this file, when I try to open it it says "Open file with" so I need to select a file to open it with but I have no idea what it is.

PS. What am I sopose to download so I can start using the themes and stuff?

What file are you downloading?

I downloaded the beta and the one by omar( or something like that.).

To use new themes, install them by litestep theme installer which you can find in popup menu (don't unpack downloaded theme .zip file)..

What to "stuff", I guess you mean modules.. So, to use them just insert downloaded .dll file into Modules folder..