Want type lots of upper case letters? You can double click on the Shift key and it will keep locked. Click again will unlock it.
Sometimes use two thumbs is better than index fingers. Just slide the keyboard outwards using your fingers, you can split the keyboard which is easy for two thumbs to type.
Press the keyboard button and move up and down.
Tired of finding the period key at the end of each sentence. You can double tapping Space bar instead. It will insert a period and followed by a space. Convenient!