please help with basic commands! (/warp , /spawn , /home)..etc

please i just got craftbukkit and when running my server i cant do any of those commands, i type in (while in minecraft on my server) /spawn and /setspawn and /help and NOTHING works, please someone help me and tell me how to install? ive already read all the forums and i just dont understand

 

Craftbukkit is just the thing making any change to the original server possible in a nice way.
You need plugins into craftbukkit to make it work. When you look at the forum there ase sections for plugins. Look there.
If you need setspawn, use PlgSetspawn (my plugin, link in the sig), for Warps i use Simplewarp. There are many more. One of the most used are ScrapBukkit, Essentials or General, all three give basic functionality known from hMod (you need only one).
But there is plenty of others.

 

this may be really dumb question, but did you op yourself?
on server console, type op yourplayername