Here's a dry or live-fire transition skill-builder drill that's great for both beginners and advanced shooters:
Put up 2 targets (you can get our Fall Leaves target right here) and choose a leaf on one of the targets.
From the holster or low ready, fire 2 shots at your chosen leaf, then find the same leaf on the second target and fire two rounds at that leaf.
Repeat this drill 10-20 times per session and you'll see your transition times improve!
The Double Triple Drill will help you improve your shooting skills and help you conserve ammo!