Use command line. Try creating playground repo and play with it. You can use github's private repos. Use separate accounts to emulate merge conflicts. Start wit

Use command line. Try creating playground repo and play with it. You can use github's private repos. Use separate accounts to emulate merge conflicts. Start with only those options you feel need: such as tags and so. Read about work models (git flow, and others). Try them in your playground repo. Basically it's impossible to learn something without trying and making mistakes, and analysing what went wrong. No failing - no success. You will get it, not that hard. Good luck!