They need to add Tagalog.
my dad is from the Philippines and i'd really like to know what the heck he says sometimes
Here's some resources I used before my trip to the Philippines this summer:
Introduction to Tagalog https://www.youtube.com/watch?v=FZ-l0PT7ZpY
Basic Filipino Language Tutorial https://www.youtube.com/watch?v=mbBquYVFb0o
Seasite Tagalog section http://www.seasite.niu.edu/Tagalog/Tagalog_mainpage.htm
Tagaloglang, a decent site for basic Tagalog http://tagaloglang.com/
http://www.filipinopod101.com/video These pod101 sites can be spammy, but have fairly good free resources in addition to the paid ones.
there are many things that would be great for them to add, but they have limited resources and cannot create a course for every language, so it is highly unlikely that they would add a language like Tagalog in the near future.
It's not necessary to buy Rosetta Stone to learn Tagalog. You can do the following:
-ask your dad, other family members, or friends if they can teach you how to understand (or speak) Tagalog
-watch TV on TFC or other Filipino channels
-look for cheaper resources for learning Tagalog through your local public library, Barnes & Noble's foreign language section, or online
Look on Memrise. Link: http://www.memrise.com/courses/english/tagalog/?sort=popular