Around Here
This Area
pronoun, の adjective
この means "this" so この辺 just means this area.
このへん
The reading for the kanji portion is just what you've already learned with the kanji 辺 so this shouldn't be a difficult one to read for you.
この辺は、人が少ないのでしずかです。
There aren’t many people around here, so it’s quiet.
この辺に、スタバはありますか？
Is there Starbucks around here?
この辺では、言葉に気をつけた方がいいぜ。町のこちら側に住んでいるやつらは、口笛を吹いただけでも顔に唾をぶっかけてきやがるからな。
You have to be careful about what you say around here. People on this side of town will spit in your face just for whistling.