What are all the commands for the text editor?

Hello. Please list all the text editor commands so I can use it faster and more efficiently. I am frustrated that this text editor isn't performing the way most editors do. Or at least it isn't convenient/using common shortcuts.

My Issue: 1) While trying to create html tags, the editor is constantly placing the ending tag. This is bothersome because now I have to constantly remove the ending tag so that I can write it in the appropriate place. ( most stressful issue because its starting to annoy me, any work arounds would be awesome )

2) I cant seem to find a way to highlight text and shift it upwards into an appropriate position like: shift + up (or the like). For me at least, highlighted text doesn't seem to do much of anything. ( I could be wrong because im a newbie, advice welcome ).

3) The list of currently available shortcuts (from the menu) are not very useful for speeding up the workflow. It feels pretty painful, almost like im forced to do copy/paste to move things along faster.

Thanks in advance to anyone listening. ;)