It depends. You can learn for free (community) part:
1. Articles - you can read interesting articles that are going to teach you about the language and culture, ...
2. Notebook - you can practice your writing skills
3. Answers - you can get the answer on the specific question (regarded to the word, grammar, ...)
4. Language partner - you can pick up someone to talk with on Skype or any other community tool.
However, the best option is to choose a teacher. You can do it here:
Once you find a teacher, you should book a trial lesson and during the lesson make a deal with your teacher (about your future work).
I hope I helped you. If there is anything else I can help you, feel free to ask me.
Have a nice day.