Ctrl-k (cut to the end of the current line and save it in a special secret extra clipboard) and ctrl-y to paste
Ctrl-e to go to the end of a line, ctrl-a to go to the beginning.
Ctrl-d to forward-delete, ctrl-t to transpose characters (this rarely saves time but I do it anyway).
You can also use ctrl with b, f, p, and n to go back or forwards one character or to the previous or next line, but I just use the arrow keys.