What can a Fool do?

I got a call from my old job (part-time college 3-6 years ago) saying that they were audited and should have contributed to a SEP-IRA for me for those years).

Surprise! They opened a SEP-IRA account for me at Fidelity with @$1900. That's great!

But what can a fool do with it?? I can't trade stocks with it. It is a mutual fund account, but from what I can tell, most/all of the funds have a minimum $2500 initial investment or more!

Can I add to this account even though it's from a past employer and I now have a 401 with my current employer?

Can I rollover this account to something else and should I?

THANK YOU for any direction you can provide!