I agree with @brady888 on competing as soon as you can. I know some comps have teen divisions. You're in luck living in Conroe, lots of competitions take place around the Houston area; I just did a competition in the Woodlands.
It is probably different in the teen classes since at most someone will only have a little more experience than you, but in the adult classes unless you're really good, you're very likely going to get blown away by the competition. But that's okay! It's a great learning experience - something you can't just simulate in training.
There are lots of strongmen on these boards. I can't speak for all of us, but I think you'd be more than welcome to pop into any of our training logs if you have questions, looking for tips, or want to see how other strongmen/women train. Most of us have "strongman" in the title, but be sure to also check out "Alpha's Log" and "Rebirth of the Juggernaut" as these are strongman logs as well.
Bets of luck to you.