I dont have a clue how to shoot in manual - I shoot in auto or flash off most of the time, sometimes the action mode too.
The lenses you have make a HUGE difference. I have the kit lens for general shoots, a 50mm 1.8 for portraits in natural light and before Hawaii, I invested in an ultra-wide angle Sigma 10-20mm for my landscape shots - it is TRULY amazing!
I also LOVE my point and shoot Canon Powershot SD750 as much as my Rebel for vacation shots - I'm a snap and go, camera in pocket kind of girl when I travel.
R