Re: [kungen] To young?
I've taken quite a few younger (let's say under about 25 or so) students in my course. Some of them are even posting here. I also learned from a younger jumper (I remember shooting video of my mentor's birthday jump for his 21st birthday--I think I had a couple of hundred jumps by then).
Some thoughts:
1) On several occasions, I've seriously considered creating an age cut off (of about 25) for my FJC instruction.
2) You know those guys who show really bad judgment all the time, and you're basically just cringing and waiting for them to go in? I'd say that my under 25 students are about twice as likely to be "that guy" as my over 25 students. And I think that understates the number in the total population of under 25 BASE jumpers, because most of those guys aren't going to take a course anyway.
3) The younger jumpers are, in my opinion, and on average
(a) more likely to get themselves into a nasty situation because of poor judgment or over-eagerness,
(b) more likely to get themselves out of it due to faster reflexes and/or better physical condition, and
(c) far, far more likely to shrug off accidents that really injure older jumpers, or to sustain much more minor injuries.
This is both good (because they're not getting hurt so much) and bad (because it tends to reinforce the bad judgment by making them feel bullet proof).
4) Because younger jumpers are generally closer to being "kids" they tend to have bigger parental issues than older jumpers--I think it's very important to address those issues openly and clearly from the outset.
5) I've encountered some younger jumpers who have really impressed me with their maturity, judgment and (yes) skill and willingness to practice. The youth and eagerness can produce a very high skill level if enthusiasm is turned to practicing things instead of recklessness. The best example of this was probably TJ, who is unfortunately no longer with us (thewalrus is also a standout there).
Kungen, I'd urge you to find some of those guys and try to follow their example (and get advice from them). I realize it's hard to tell from where you're standing who is who, so if you want to PM me I'll share my thoughts on who, specifically, I'd recommend you talk to at greater length. I'd also recommend you find someone who is now an older jumper, but who started when they were very young, and get their advice on what to avoid doing.
Bottom line: I think starting young can be ok--if you are careful not to get too carried away, or you are a naturally cautious jumper to begin with, and if you are very clear with your parents about what's going on.