My first BA was in history before I went into tech stuff.

It's honestly a hard question and depends on you. I think there's two core challenges: 1. What would be interesting to you and motivate you 2. Finding quality sources

The first one is easy but the second one is hard if you don't already know a fair amount of history, and there's tons of junk out there.

I'm admittedly pretty snobby on my sources but some recommendations (pick whatever works for you): - The Revolutions podcast is excellent. Made by the same guy as History of Rome - Unironically, the AskHistorians subreddit is a gem. It's hard to find questions with answers. Just search for their Sunday day of reflection posts. It's a compilation of interesting answers - If you're able to get into textbooks (not everyone is), do a search for an intro level textbook that's a short survey of an area/time. For example you find smallish intros to most regions and times from Cambridge

What are you interested in and how do you think you'd enjoy learning?