If you're interested in something self-directed, most local public libraries subscribe to an online language learning program called Mango Languages. It starts out pretty basic, and it's really designed around the principle of repetition. Still, it might be something to consider. Here's the link to Worthington's subscription.
http://www.worthingtonlibraries.org/research/databases/mango-languages
From outside the library, you'll need to enter your library card number for access.
A similar product available through Columbus Metropolitan Library is Powerspeak. It's under "p" in this alphabetical listing of premium resources through Columbus:
http://www.columbuslibrary.org/ebranch/index.cfm?pageid=18&parentid=855
Comparing the two, I think that Powerspeak could be described as more immersive/interactive. Both have their advantages though, it mostly depends on what you're after.
Again, you'll need a library card to access Powerspeak from outside the library. Powerspeak is pretty new to the field. Worthington Libraries will be adding it to their collection of electronic resources on or about August 1st.