A negro male in 1900? I’ll pass.
You know, I hadn’t even considered this. Think that I could get a good engineering job as a hispanic male in 1900? Hm…maybe I better pass as well…
-XT
I’d masquerade as a man and move to California where I would revolutionize the filmmaking industry. Imagine dolly shots in the first films ever made.
If the man thing didn’t work, I’d sleep with someone to get my ideas listened to. 
I’d head to one of the dozen or so newspapers in New York and get myself a job as a theater correspondent (there were plenty of women doing that back then). I could interview, in person, Anna Held! Weber and Fields! Maurice Barrymore! Lillian Russell! Bliss.
I’ve sometimes speculated that the crash of 1929 was caused partially or entirely by unscrupulous money-hungry time travelers.
If you knew what was coming and what would happen you could make a mint. Not only that, but you could buy up stock dirt cheap of companies you know will survive the crash and do well in the future.
-XT
I think it goes without saying I’d be the kind of trouble stirring Negro that would get his ass lynched within a few years.
BUT – I could make a very good living as a teacher, and could set new journalistic standards revolutionizing print media.
I would opt for the 1920’s. I would work hard and steadily bet on the Yankees building up a large nest egg.
At the crash I would start making long term investment and if some random easy to cure today disease didn’t kill me I would quietly become filthy rich.
Work wise, I would try for a good job with Con Ed, Start as an electrician and try to get into circuit design using my Computer Training.
Jim
So, you would waste the opportunity?
I’m sure that said interviews would give you pleasure, but the OP, and conventional wisdom, says that one would take financial advantage of the situation.
I’d be burned as a witch. (Yeah, I know, but I think they’d make an exception in my case.)
I’d patent the Haber process for making ammonia, and be rich. I’d go and win a couple Nobel prizes just by knowing what today is high school chemistry.
I’m a pretty good photographer, and while technology has changed drastically, I could adapt to a 1900s camera pretty quickly, and could do a decent job at that for a living.
Being female it might be more difficult to be taken seriously so I would probably go back a little farther than 1900 and get a job as a cook at a rich family’s house. I would introduce them to pizza, ice cream cones, hamburgers, chips, and all sorts of yummy stuff that wasn’t popular yet. I would convince them to start a restaurant or two, with me having the secret recipies. Also It goes withou saying that during the depression I would have a plan to save my investments and all that jazz.
I reckon I could remember enough of the salient points of some of the early 20th century’s important works of literature to ensure a tidy income from either writing them years before their original authors, or suing the original authors for stealing my ideas when they do publish the “original” work…
Although I’d have to invent the Aeroplane before I could write the Biggles adventures…