I studied 4 years on the conservatory. So I think I have a pretty good foundation on music theory... Time will tell! I am currently living in Helsinki and since I do not speak finnish (yet!), I cannot attend classes on the conservatory which sucks
But you know what they say: fight for it! So I'm sticking to books and some courses I have. I have Piston's books, Kent Kennan's book on Counterpoint, Jane Clendinning "The Musician's Guide to Theory and Analysis" + recordings + workbook.
I use Auralia and Musition, so I think I'd be OK for a while. The thing is I need to know what is the best method to study these topics (counterpoint, harmony and orchestration) as to not get confused at some point.
I'll stick to Harmony, giving some glances at counterpoint. I think it would be important, since harmony and counterpoint go hand in hand (or so I feel, please correct me if I'm wrong). After grabbing a good understanding of harmony, I'll move on to studying counterpoint seriously and finally (and hopefully) orchestration.