Welcome to the forums, Sourapple!
It takes a little searching, but your best bet would be to head over to the Applications
and Android Lounge
forums; there's a ton of great info for changing platforms.
Also, you can scour the Play Store online ahead of time to see if the apps you use on iOS are available for Android. Reading blogs for Android as well can be helpful for finding tips, tricks, apps and anything else that would help out. One of my personal favorites is Droid-Life