Yes, whether you want to study internationally for one semester or get your degree outside the US you may be still eligible for federal student aid.
Would I need to worry about having an VISA?
Yes, you may need a VISA and also medical insurance.
Is it smart to start to do research on schools abroad early?
Yes, you should start early when you want to study abroad because you got more to do.
How can I research international schools and their requirements?
First off it is wise not to panic and you are on your own; but if you are very organized and determined you will be just fine.
I want to study abroad for a year is federal student aid available?
Yes, it could be available for studying abroad if you meet the aid eligibility.
Do you know about the FAFSA form?