Most library databases allow you to login and gain remote access via proxy. Access databases from the LITS E-Resources A to Z page and login using your regular Mount Holyoke username and password (same as email) when prompted.
A couple of useful resources to use while you're abroad:
Moodle will work from off campus just as it does on campus.
You can log in at: http://moodle.mtholyoke.edu. When you log in, you will see all of your courses. As with ella, courses remain invisible to students until they are published.
Links from Moodle to subscription databases may require an additional login (see database access above).