While not purely strategy, I find watching Twitch streams to be very helpful. My two favorite streamers to watch are
Jason Somerville and
Jaime Stamps. Somerville plays a variety of games at many different levels, both cash and MTTs. His Run It Up series has come a long way, but he did start by playing micro stakes. Most of those videos can be found on his
YouTube channel. Jaime Stamps is an MTT specialist. One more Twitch streamer that I would recommend is
Kevin Martin. I haven't watched him much, but he is friends with Jaime Stamps and is also an MTT specialist. I think that the benefit of watching good twitch streams is that the information that they provide and the types of play that they utilize and encounter are always current. Because Twitch can be viewed live, the players' approach to the game will always be relevant to the modern game. Some videos that might be more specific to what you described in your post are strategy videos by
BlackRain79. He is a micro stakes specialist, and his
videos are geared to that level, exclusively. To get an idea of what kind of advice you can expect from him, you only have to look as far as the title of his first book:
Crushing the Microstakes.