Realistically, and assuming I claimed it and handled the financial and legal aspects of having that much money, I’d do this;
Pay off my debts, as well as those of my parents and sister, then help friends pay off everything. Then buy a nice house and nice stuff, leave my job, then travel.
Then I’d see what sorts of things I can use my money to improve, or who I can help.
While money is nice for security, I don’t need or want anywhere remotely close to 1$billion at one time. That amount of money is dangerous.
Don’t have a technical background per se.
I have a degree in music education, and work at a consulting firm doing non-programming-language-based data work.
Personally, though, I am a very technical person who loves science and math. I have a tinkerer’s mindset; I love taking things apart and understanding how they work, then putting it back together.