Can anyone help me make a logo transparent?

[dzags]

I'm trying to make two logos for my phone but I'm not a photoshop user by any means. Ideally I'd like a basic espn logo like this :

and a logo for a forum I visit like this: . My problem is I want them to be transparent. I have no idea how to add transparency to a logo. Also - if anyone has a ready made PPCgeeks or XDA logo that you can shoot me a link to I would appreciate it, I have substitutes that I am using for now but if theres some that are already made then that works too

If either someone can help me by making these two transparent (if its simple), or give me some help on actually how to do it I will love you forever, thanks in advance!