Typing with one hand is an easy and useful skill to learn. TypingClub is the most effective way to learn how to type with one hand.
Keep practicing each lesson until you get all five stars. It really doesn't take much to learn, a few minutes a day for one to two weeks and you will be a pro!
You do not need to create an account. However, as you go through the lessons, you can create an optional profile in order to save your progress.