Matt, you will surely get a ton of advice from a ton of experienced investors. That may or may not add to your paralysis since you may get pulled in different directions. As you may have heard, invest in what suits your personality.
I have a similar background as you. CompE degree working full time in possession of cash looking to retire much earlier than the rest of America. I have experience in REI but am no where close to an expert. I'm about a year in. But what I've found to suit my personality and situation is buy and hold SFR. So far the expenses have been minimal and the tenants have been low maintenance. So for me it's been more hands off and more along the lines of being passive. Maybe I just got lucky so far. Maybe I ran the numbers good and chose great tenants. Either way, I'm hooked. I'm now looking for a third property.
There must be some niche that stands out to you. Start by scouring the MLS, run some numbers on paper, drive by properties, talk with realtors, run more numbers, and make offers. The confidence and knowledge will come.
Good luck.