Source: https://www.howtogeek.com/681662/35-mac-text-editing-keyboard-shortcuts-to-speed-up-typing/
Option+Left Arrow: To the beginning of the previous word. Option+Right Arrow: To the beginning of the next word. Command+Left Arrow: To the beginning of the current line. Command+Right Arrow: To the end of the current line. Option+Up Arrow: To the beginning of the current paragraph. Option+Down Arrow: To the end of current paragraph.