Excellent photos. Welcome to the digital photography world.
I have been a photography buff for many years going back to developing and enlarging black and white film and thinking that cropping and pushing the film's ASA rating were the ultimate weapons available to the amateur.
May I ask what camera you bought? It seems to have an excellent zoom ratio and the clarity is great. Are you using a tripod for the long shots or are you blessed with amazing stability?
I bought my first digital camera in 1997. A Sony Mavica MVC-FD7 that stored about 20 photos on a 3.5" Floppy Disk and had a very good ten times zoom that was a nice feature.
I have gone through a few since then and presently use a Canon Power shot SX 120 that does a decent job and fits in a back pocket instead of a shoulder bag, a feature that has become my biggest priority.
I enjoy using a couple of free sites for editing and resizing and have a copy of an older Photoshop program that is far too powerful and complicated for my needs. Photoshop offers a trimmed down version at a more reasonable cost and I was about to buy it when I came across this on line editor which works well.
http://pixlr.com/. Another is Irfanview
http://www.irfanview.com/