Looking for General Tips as I move in to new househack

[Evan Rumble]

I am just about to finish up with the purchase of my first property. It is a stacked duplex, where I will be living in the smaller upstairs unit. We plan on living there for a year or two.

I would love to hear if anyone has any general tips, as I start living there and managing the downstairs unit. 

This could be anything from;  tips for saving on costs/utilities, tips for dealing with tenant/neighbor,  ways to create justified rent increases, tips for tracking expenses/income, or any other general advice from experience.