Answer to "Keyboard is typing the wrong character."The two behaviors (å and deleting words) indicate you have a stuck option key. Could be a dirty keyboard. Try another external USB keyboard, or snap both option keys with a fingernail. Also, the option key may be stuck in software because of accessibility “sticky keys” feature. If it is, you may have an option key logo in gray in the top right corner of your screen. Go to System Preferences > Accessibility > Keyboard > Hardware and make sure “Enable Sticky Keys” is not set. For good measure, if it’s not set, set it and unset it again.