Enter key – new paragraph (one line space)
Shift and Enter - new paragraph (no one line space)
Pressing ctrl and z together - will undo the last step you did, ctrl y - will redo (if you used undo by mistake)
ctrl c - will copy selected (highlighted) text.
To paste what you just copied - put the cursor where you want it to go and press ctrl v.
ctrl a - will select all content in the open window.
ctrl f will open a small text box where you can type a word or a fraise you are looking for and hit enter and it will jump to that word if it's present in that document (great for searching words in long documents, web pages, works in pdf documents also)