If you click the link below there is a 22 minute video series on the site called “Pre-flop Bluff Re-raising Strategy” and it’s definitely worth checking out. You’ll have to sign up but there’s a one week free trial so you can either cancel after that or pay $30/mo, which is one of the best values out there for a training site.
https://pokersprout.com/?utm_campaign=6jfkcbgv8jf7&utm_medium=referral&utm_source=offthefelt
Here are the topics in the video series:
– How Your Hole Cards Matter
– Bluffing Pre-Flop With Position
– Bluffing Pre-Flop Without Position
– Attacking Weak Players With Bluffs
– Avoiding Attacks By Opponents