Help With First Rental Property

[Marlon Diaz]

I've been looking at youtube videos from various sources to prepare myself on buying my first property by the end of the year (2020). My goal is a 4-plex. I'm nervous about it, I'm currently deployed in Afghanistan and I'm ready to come home. and invest my money. I would like to hear the story of your first deal, the bad and the good as well as the answers to the questions below. Thank you all in advance. 

1. What should I look for and what should I avoid? (in example: location benefits such as next to a university, waterfront, etc.)

2. What rookie mistakes did you make so that I can try my best to avoid them?