Hello!! Good to see that you're really interested in being the submissive. However, it'd be really difficult for someone to "train" you to the best submissive. I get the sentiment behind the words. But like people suggested above, you have to know what suits you the best. Try to have a picture of things that you like and want to explore. And have a clear picture of what you don't want to experience. Set this straight with whoever you talk to.
Adding to this, know about the safety of what you do and make sure the partner knows about it as well. Whatever you do, even if you enjoy, it's important to know the safety issues and measures to take. Also read as much as you can. There are a lot of fetishes and kinks with tons of ideas in each. Get to know about it all.
Another thing I'd like to mention to you and to all the people out there is, submission is not a given if you've identified as a submissive. It's the power and right of the submissive to choose if and when to submit. It'd be great for you if you understand and learn that before you start your journey.
And one final thing. There's hardly any hard and fast rules for bdsm. It's what you make of it. There are some basic protocols which gives it the structure like consent. Other than that, the rest is what you make of it. From what, when and with whom to how, why and why not.... There's no fixed answer to these. It's what you make of it.
Good luck and have fun.
Devil