As a recent vim convert, I learn new commands everyday from my fellow rocketeers. Here’s some cool ones for deleting words:
dwto delete word. Cursor placement is important! If your cursor is not on the first character, it will only delete from your cursor to the end of the word.
diwto delete inside word. Deletes the entire word that your cursor resides in.
dt<char>to delete to character. Deletes from your cursor to the specified character.