Take a look at this thread.
http://www.thephotoforum.com/forum/...orum-photo-gallery/241717-bryan-peterson.html
The person outlined in there has a series of books that helped me quite a bit when I was first starting out (still does), and I'm sure it has some great advice for anyone new to photography.
Other than that, take a look into the "rule of thirds". Not a hard fast rule mind you, but for lots of shots, it makes for better and more interesting composition.
As far as the photos here,
#1 seems a bit OOF, and the bird is really quite obscured by the branches. Nice attempt, but sometimes nature just doesn't play along and give us the shots we want. Next time tell the bird to sit somewhere where you can get a good look at him.
#2 I'm not really sure where the focus in on this one.... it almost has a tilt shift quality to it. Personally, I feel that it would benefit greatly by being recomposed to place the path somewhere else in the frame. Also, with the trees all being backlit and the pic seemingly being metered for the ground or the path, all of the trees are so dark they have lost most of their detail. All in all a good attempt at what could be a good scene though.
#3 Sorry. This one doesn't do anything for me. Over-exposed moon on some underexposed trees. I think I get where you were going with this one, but I'm not diggin it. My thought are that if you were to read the "understanding exposure" book outlined in the link I provided this photo would go from trash to trasure in a heartbeat.
Good start, they look better than anything I produced whe I was starting out! I'm sure someone will be along shortly to provide a better critique and more helpful advice in just a little bit here.