[FEATURE] Elaborate on branch creation and git commits in docs

[g-parki]

Docs currently assume some knowledge of git, but I think being a little more explicit will be helpful with newcomers. Current docs have a "create a branch" section followed by a "push branch to Github" section. In between these I think a "make commits" section with git examples would be useful.

[bryevdv]

@g-parki apologies, I added labels as a reflexive habit, please feel free to label this as you see appropriate :)

[g-parki]

@bryevdv I think we added tags at the same time. I didn't explicitly remove "task", I just didn't select it in the first place 😄