FStep said:a lot of schools don't teach leg locks until purple belt or high blue belt level you can get some instructional videos and practice with someone if you can't wait or just ask a higher belt to show u some stuff
b0b said:Heelhook, toeholds, straight ankle lock,etc are all part of BJJ.
Stephan Kesting said:Almost everything you want to know about ankle locks: www.grapplearts.com/Ankle-Lock-Breakdown.htm
Almost everything you want to know about kneebars: www.grapplearts.com/Kneebar-Mastery.htm
Let me know if this stuff helps answer some of your questions
So you've never known anyone that's got injured by an overzealous noob cranking a leglock because "they do it in UFC" at all?