16 years old? I just turned 50. You would think that we had very little in common, the fact is that couldn't be the furthest from the truth...
I was 16 when I bought my first expedition vehicle (my first motorized vehicle to boot), a 109 Landrover. I fixed it up (especially after the Lucis wiring harness caught fire) and a few weeks before my 18th birthday...drove to Central America. I ended spending most of the next 5 years surfing & exploring the most awsome places LOOOOOONG before it was popular a thing to do.
You are at the threshold of being able to do the same thing...Just in a different place & with your own personal goals. I have no clue what those goals are, but here is a few things that I consider important when owning an expedition vehicle. You may have no personal reference to what I'm talking about, but it seems that your not shy about asking...Wa da ya mean????
Here we go...
Buy a full set of tools and don't be afraid to learn how to use them.
Find a local 4x4 shop & get a job there. Take they're abuse and learn.
Don't buy a vehicle that has complicated electrical / electronic systems (ie: electric windows, electric adjust seats, etc.) It would be great to say no ECU...But I afraid that is a whole other issue.
Save your money...Then look for a person that was building the dream RIG...Then got his girlfriend pregnent. (more about this later). There are people out there that come to the realization that the can't afford their dreams & have to turn and burn. Their loss is your gain!
Find the most simple 4x4 that you can sleep in. Learn to sew or talk your mom into making a complete set of "black-out" curtins...So that you can "sunggle-down" anywhere from a parking lot at a mall to off of Mex 1 along the beach in northern baja without being disturbed. make sure you have condoms so that your not the one that has to sell they're adventure rig. You laugh!...Give a girl a place to "get snuggley" and you'd be amazed what happens.
Don't hold any emotional attraction to the vehicle (this is by far the hardest goal). DRIVE IT LIKE YOU STOLD IT!!!!!!
If you want to REALLY want to be an adventure person...This vehicle will the first of possibly DOZENS of vehicles that you'll own. BUT! The first one is where you'll make the most mistakes...Its cool! we've all been there.
Enough for now.
Two vehicles i'd look at (both purchased with the lowest miles possible)...
Suzuki Samuri's (spelling???) & sidekicks.
early 1997 Dodge 4x4 truck with 12 valve Cummins 6B turbo-diesel ( this will seem HUGE to you! but with an inexpencive shell....OH MAN! What a second home!
As for me...This is my second home.