Kayleeroo!
hi sweetie! You are young enough to be my daughter, bless your heart! I think summer is a good time, if your church has some short term mission opportunieties, call the office or ministry department and ask about any weekend or short term summer mission opportunities. Not long ago me and my daughter went to Mexico on a very short term servanthood trip, to an orphanage. We got to help at the orphanage and also minister and talk with the kids there...another time they had a local right here in our city, they have those alot, you minister to homeless. I espeically like those because I feel our own people, esp the homeless are overlooked by churches, while other countries are attended to.
God bless you!!
as far as what lenguages to learn, thats hard to say because missionaries go to all parts of the world, some even minister right here in the U.S., to the homeless, or pro-life missionaries, etc. There's a group called Survivors also, for people your age, they are prolife missionaries here. As long as you have this on your heart, God will lead you...one test I have found is that if God is telling me to do something I personally dont really want to do, or that I would REALLY prefer not to do, that can be a signal it really is from Him!!
Let us know how it goes!!