ctrl+a or Home
Moves the cursor to the start of a line.
ctrl+e or End
Moves the cursor to the end of a line.
ctrl+b
Moves to the beginning of the previous or current word.
ctrl+k
Deletes from the current cursor position to the end of the line.
ctrl+u
Deletes the whole of the current line.
ctrl+w
Deletes the word before the cursor.