Set up an easel at art fairs or any community event and start doing 15-20 minute portraits. Practice with your friends. Try this for awhile and you may soon know what direction you want to go, plus you will make a few dollars and meet some people.
You can enroll to a arts class and get some skills. You can also do sketches and take them to art galleries, to see if they will be accepted. Search for your areas art exhibitions and enroll to showcase your sketches. Good luck!