Are there any tutorials on how to add health/damage to your game? Also, could I do it with logic blocks or should I use python?
http://www.tutorialsforblender3d.com/Game_Engine/HealthBar/HealthBar_Logic_2.html
This is for 2.49, but the logic bricks are similar enough.
http://www.tutorialsforblender3d.com/Game_Engine/HealthBar/HealthBar_Python_2.html
This is the Python method, but you can download finished .blends to experiment.
You might want to look over my “Turret Defense” video tutorial series.
And specifically, this video: http://www.youtube.com/watch?v=MB3mFA90K0k where I show how you can set up a basic HP counter.
If you want me to do a more specific video tutorial, for any given topic, vote in my “Weekly Tutorial” forum (you need a gmail/google account to log in and vote).