Here are a couple more in addition to flashkit.com that have tutorials and good forums:
www.actionscript.org
www.kirupaforum.com
www.webwasp.co.uk
www.cartoonsmart.com check out the free ones here, especially if you are just starting/beginner
Have fun, Flash can get really involved but it is very pleasing when you get the results you want.
If you want to see a Chicago Cubs photo gallery I did all in Flash then check this out:
the intro page is cheesy because the gallery is in a popup window that will popup even with popup blocker on (hehe).
http://rberry883.home.comcast.net/firstintro.html
It even features a short looping song I made with Garageband (amateur stuff, LOL).