WHat do you mean by platform? trading platform or the place where you can learn trading?
Well, I assume that you just want to learn how to trade but you don't know where to find educational materials for that. The first place which comes to my mind is surely babypips. I mean that perhaps that is the most popular trading forum on the internet and there is also an educational center. It has a great compilation of educational articles on forex, so you can learn pretty much just in one place. Later on, you can ask your questions on this forum and in most of the cases traders are eager to help newbies with their questions, so don't hesitate.
I would also like to mention forexpeacearmy. There you can also find an educational place with lots of articles. I feel that it would be a good idea to learn from both of these resources simultaneously in order to get a full picture of the trading. This website also has a forum, so your questions will definetely find the answers.
Finally, you can also browse youtubr for different tutorials, but as for me, I prefer to learn through reading rather than watching the videos, but we are all different, so, I don't know which source of indormation will be more suitable for you.