As a professional educator and writer my principal editing roles are fixing grammar, punctuation and style problems in articles. I believe that articles should be written in a straightforward and modern English style (not in a convoluted and outdated 19th-century style as so many articles sadly are). I have a low tolerance for the many editors who frequently misuse articles for promoting their personal opinions or their uncritical or ideological following of belief systems, as well as any kinds of hype, advertising, slander and blatant bias. I do not make too many editing mistakes and I am always happy to have any mistakes corrected if done politely and with reference to the Manual of Style instead of merely personal preference.
Some people with Wikipedia pages I have known or met
Remember to always sign your posts on talk pages. You can do this either by clicking on the button on the edit toolbar or by typing four tildes(~~~~) at the end of your post. This will automatically insert your signature, a link to this (your talk) page, and a timestamp.
The best way to learn about something is to experience it. Explore, learn, contribute, and don't forget to have some fun! To get some practice editing you can use a sandbox. You can create your own private sandbox for use any time. Perfect for working on bigger projects. Then for easy access in the future, you can put {{My sandbox}} on your user page. By the way, seeing as you haven't created a user page yet, simply click here to start it.