I second using F-Droid, I wanted to mention for all those Android root and custom rom flashers, using titanium backup is a staple to backup up user apps and data, but to access full features it is $7.Good luck. It's going to be ugly.
The good news is.. Using this app, and other things, I've essentially got 75% of my phone in the green zone now, and it has caused me to remove a good number of apps that were being very very bad.
Check out F-Droid, so far 90% of everything I have scanned on F-Droid checks out as GREEN. Googleplay has some really dirty, poorly programmed junk apps from major players on it. Can you imagine how great my phone will function, and how much more private it will be when I am done this weekend with it? I can't wait.
On F-Droid there is a beautiful app call oandbackup, it is totally free and does the same thing. I'm loving it.
Just a heads up!