Glad to know that you are a wannabe trainer. Here are a few suggestions:
Try joining the local chapters of JCI (Junior Chamber International) and/or ISTD (Indian Society for Training and Development).
JCI is basically a training organization. You will get to meet a lot of local/national/international trainers through JCI, which would change your perspective about training.
ISTD offers diploma courses in T&D. You can visit their website to find out more details.
TTT programs are good. The effectiveness of the program would depend on the institute/trainer delivering the program. You can attend one or two to get a feel. Then, you can form an opinion of your own.
No matter what you learn or which institute/organization you join, your dream to become a trainer would still be incomplete if you do not have an audience/trainees to share your learning/knowledge. You haven't mentioned what profession you are currently in. If your current profession gives you an opportunity to test your training skills, then look no further. Grab it. If it doesn't, you may have to look for other vistas.
Through JCI, ISTD, or TTT, you come across other training professionals who may give you firsthand info on how to sharpen your training skills. If you build your network carefully, you might as well be able to join/work under a professional trainer. This would also give you an insight on training as a career option.
For a newbie trainer, getting an audience is pretty difficult. You would require some time to establish yourself. So, it is really important that you persevere, enhance your knowledge continuously, and build your network of friends/followers. As a first step (if your current profession does not give you an opportunity for delivering training), try volunteering for some NGO, where you can deliver training.
You will find a lot of information on citehr. Just do some research. Patience is the key. Do not forget to Google. It would give lots of information, more than you can handle.
Last point - there are several online communities/forums that you can join. Books too would help you a lot.
All the best!
Regards,
Shibu