newbie

[Shai S. Yahav]

hi,
new in linux and programming...sorry for the dumm questions..

where can i read about vi or any other editors on linux?
i tried to compile test.c and i got an error msg Undefined reference to
'main'
how can i define 'main'? what is 'main'??

if u have any url about C (programming,compiling..) please send me the
url.

Thanx