First thing you should do:
and Resources For You
There is a lot of info over there...
Besides it's not recommended to use .deb, .tar, etc... only equo/sulfur for installing.
And another command, maybe the first you should use ever:
#equo update && equo install equo sulfur entropy
-> interfaces by entropy install
-> compiz, I don't use it, but search around the 2nd thead I've post in this message.
-> again, use "equo install opera" or sulfur (GUI), try to not no use extra packages, if you want testing software, search around "how to use limbo repos"; or you can try find it in portage (find info of updating and syncing emerge and layman before installing anything)
After that, you should not have any problem, but came here again if you need it
PS: I'm sorry, but I don't speak Italian
Maybe Spanish if it's better for you