Good question. I dont think you need to think much about BRM when you are playing micro and can afford the losses.
It might be good for tutorial reasons, but if you are a losing player, then its a tad difficult to apply BRM.
I mean BRM dictates how big bankroll a player needs to play at a certain level without risking going broke cause of variance.
But if you are a losing player then no matter how big bankroll you have you will eventually go broke.
So if you can afford it, and you think that you will be able to apply proper BRM once you become a winning player, and start moving up, then just see it as learning money.