If you haven't already please familiarize yourself with the forum rules because that's people's biggest mistake here.
They don't RTFM
This is a good starting point in learning *nix .
You should use the command line as much as possible.
The more you use it, the easier and more exciting Linux will become. Practice makes perfect, as we say.
Also, maybe you should start with Kubuntu instead of Ubuntu. The KDE desktop makes things a bit easier, especially in terms of menu structures etc. Backtrack comes with KDE as default so that's another reason to learn on Kubuntu.
I mess around with several distros and OS's. Backtrack is my ultimate favorite, though.
Remember that this is a Backtrack forum so if you do ask for help with another distro don't be surprised if someone says something.
However there are General IT section, wireless section etc. so take a look and see what kind of questions are asked here.
Most important, don't give up. If you want to learn linux, you're definitely going in the right direction and there's a lot to learn, but the satisfaction and joy you get out is well worth it.
I'll be learning new things till I'm old and stupid.
hope you enjoy your stay.