Watch the Tapping: Level 1 online guitar lesson by Chris Buono from Guitar Gym: Tapping
Workout #2 is a continuation of #1, but this time the open string that you pull-off to from the tap is followed by a hammer-on. This is one more step towards a more full tapping sequence like the ones you'll work with in Level 2. The biggest challenge is keeping an eye on both your tapping and hammering accuracy. Get used to it - "tapping targets" and tapping awareness skills" are a BIG part of tapping!