Today we went to the wildlife springs, 
Took some great shots.. but they ended up being terrible..

I ahve a cannon rebel.. with a ef400mm F5.6L and an extender EF 2xll

This is really upsetting me.. I want to be a good photographer.. I don't want to be perfect.. just good.. ya know..

The settings.. I am just not getting the settings..

quality i have at large
red eye on
beep on
AF mode?  ONE SHOT
                     AI FOCUS      
                     AI SERVO

Metering mode?  those three selections

iso speed?

A-DEP is what?
same with 
M
AV
TV
P
and the rectangle...

I know what he icons are..

any help will be awesome...

;0)