You can always teach yourself, but a mentor can teach you the lessons they have learned that you won't find in online resources.  If you can find someone to take you under your wing that would be great.

Another idea is to join online communities (such as this) that are dedicated to trading and sharing information.  I would recommend looking into live chat platforms where people are sharing information constantly.  There is a lot of noise, but if you know who and what to filter out there are a lot of great traders out there giving away tons of information for free - you just have to know how to find it.

Best of luck!