I think the best way is just to write every day and keep writing, and then when you feel you have something to share/publish show to others and get feedback from them.When you have something really good send it to publishers.

In addition to the suggestions you've already received, there are also websites where writers can share their work and read and critique each other's work. https://www.writing.com/

Here are some free online writing classes:

https://www.class-central.com/report/writing-free-online-courses/

http://learningpath.org/articles/Online_Creative_Writing_Courses_Offered_Free_by_Top_Universities_and_Educational_Websites.html

Thank you, for your suggestions. :)