I'd like to install Ubuntu in my computer. I learned that if I install an alternate version, I can choose the .deb packages I need. But when I log in the system, I always face the problem that there are some packages I should have installed which I have not.
I tried a desktop version, and it ran well. So it must be that I made some mistakes when installed it.
So where can I get a list of .deb packages, and what are these .debs used for?