The half guard years ago was known to be just a stalling, or safety position. Now it is considered to be one of the most dynamic grappling positions you can be in. Everyone should have a half guard game in their arsenal.
Here you will find 42 HIGHLY effective half guard techniques from the bottom in just a 6 minute reference video. I have personally hit every single one of these techniques in either live rolling or in competition. This video is meant to serve as a reference and not a detailed instructional.
Hope you enjoy.