I want to help the linux community.

/prog/
I have seen a gap in the software available for linux, and think I might be able to help. I don't want to go into what software it is, but it's something that involves a lot of commandline tools. I want to develop a GUI so the average joe can use this and it will be another thing that windows doesn't have the advantage on.
Thing is, I've not done much programming on linux apart from bash scripting, and have no GUI experience at all on it. I've installed Kdevelop (don't hate) on Ubuntu (don't hate), but I don't know what to apt-get to install the libraries that I can use for building GUI apps. Anyone know?
Thanks in advance.

I don't know where this idea that GUI == user-friendly came from, but you're not doing anyone any favours by discouraging them from using the most powerful tools at their disposal.
If you want to help newbies, write bash completion scripts for applications that don't have them yet. That would achieve everything you could hope to achieve with your GUIs, and has the added bonus of not being completely retarded.