I totally agree at this point... it should be easier/faster to add tags to a note.
How about assigning tags directly when entering the note title?
So if you create a new note, you could enter something like: "My Note title #tag #anothertag".
When pressing "enter" or "tab" key the "#<tag>" strings will be removed from note title and converted to real tags.
I think this could really improve the creation of notes with tags.