I already have a 401(k) and a normal brokerage account through Vanguard, invested in a few good index ETFs. I set it up a few months ago and I remember there's some paperwork I still have to find and handle, but mostly I haven't looked at it.

When I'm actually making money I can transfer into American dollars again, I'll be dumping some fixed amount of it straight into those accounts for investment.

However, I currently make far less than $50k/year due to being a grad-student, so it's not like I can save nearly that much.