Using keyboard shortcuts something that many people do, because it’s usually faster to enter a key combination than delve down into menus and sub-menus with the mouse. But don’t confine yourself to the standard ones like Ctrl-S (Save), Ctrl-C (copy) and Ctrl-P (Paste). If there are particular actions you take on a regular basis, find out what the keyboard shortcuts for them are. There is nearly always one.
If you find to your dismay that the keyboard shortcut you need doesn’t exist, you may be able to create it. In Microsoft Word, for example, you can record a macro in which you prefer the action you want, and then assign the macro to a keyboard shortcut. If you use a different word processor, trawl through the Help section to see if there’s a way of creating your own shortcuts.
Clearly, not all keyboard shortcuts are useful. Those that require you to use more than three or four fingers can be both awkward to use and hard to remember. But if your word processor lets you create your own shortcuts, then create your own simpler version of the difficult built-in one. If you do that, however, just make sure you’re not overwriting a built-in shortcut!