??? From the Computer Stupid

[sonny]

I'm working on being computer illiterate. I notice on the contents page for each forum there are several columns, all but the 1st two are labeled. Why not the 1st two, and they have pictures where the other don't, why. Some of the pictures look like manila folders, some on fire, some not, some burning red and some yellow. Can someone please explain the what and how come?
Thanks for your time