These are not lifesavers but helpful hints
Tapping and holding a letter on your keyboard will provide you with accented versions of that letter.
Tapping and holding a symbol will provide you with alternate symbols. For example, the dollar sign will offer up a handful of other currency markers.
Tapping the “123” numbers key and sliding your finger to the number you want will type the number and immediately return you to the letter-based keyboard.
Tapping and holding the delete key will delete text faster. In some instances, the speed will increase incrementally with the amount of time you are holding the key.