videos of for expanding my skills with london system
Kamryn's videos on YouTube are a very good introduction to the London. On the deep end, there is an award-winning course on the London System by Alex Banzea on Chessable. I would start with the kamryn videos and get a feel for whether you would enjoy playing the London. It is more for folks who like positional, closed type play. If you like chaotic tactical battles, then the London is probably not for you. Because it is so common, you can't go wrong by becoming familiar with it.
Introduction To The London System & Jobava London System
https://www.chess.com/blog/RussBell/the-london-system