My 2c...
One thing I wish I had known is that if you spend more on the camera body and get one with the focus motor built in, the AF lenses are a lot cheaper.
The entry level ones don't have the motor inside, so you have to buy AS-F lenses that have the motor built in, and they are a LOT more expensive, like 4 times the price.
Also, although I am a fan of Nikon because the "click" sounds better, the entry level Nikon doesn't have bracketing or IR remote support, which the Canon does. I really miss these features.
If I could reverse time I would probably opt for a higher level used camera as opposed to an entry level bundle (I got a D3100). I never even use the 55-200mm lens it came with, although I don't really shoot birds and stuff. The bundled 18-55 mm lens is very good though, closeups are amazing, took this one of a small tree frog with it:
And it does nice portraits too:
And don't stress about Nikon vs Canon, they are both the best you can buy.
Now go get a camera and start taking some pics
One of the most tragic things I know about human nature is that all of us tend to put off living. We are all dreaming of some magical rose garden over the horizon instead of enjoying the roses that are blooming outside our windows today.
- Dale Carnegie