Of course, you should use ten fingers for typing, but you can start with a layout that’s the most comfortable for you. The small bumps on the F and J keys will help your fingers locate the correct position without looking. This setup should give you a full range of motion. The more you type, the faster you will get. There are a few alternative layouts that propose a more ergonomic approach to typing. You could also take the big leap and try out the Dvorak keyboard, but that’s a different story.