There are a few vim motions that I think is the best. Here are some of them to get to know.
ci"/ci(/ci[/ci{/ci'/cit/ci< - Deletes everything inside the thing and lets you edit with insert mode in one swoop. Very handy and can also be executed anywhere from the line. If there are multiple matches in the same line though, it will snap into the first one.
ea - End of the word currently in and append. This should be considered a single motion in muscle memory the way this is so useful.
gea - End of the last word and append. Used in tandem with the above.
ve and p - This replaces the visual selection with the line or word in the paste buffer (unnamed). This is especially useful because the alternative methods (delete and replace manually) involve messing with the yank buffer with extra keystrokes 0p and such. This does it in one move and looks intuitive too.
d/{pattern} - Deletes upto but not the pattern. Normally doing /{pattern} lets you search. Combining it with d lets you delete upto that thing. Works upwards as well with ?
daw - Delete a word and the space after it. This is useful because when we just do dw which intuitively means delete the word, it only deletes from where the cursor is to the end of the word and leaves the space after as well, leaving behind 2 spaces which you have to fix with x. This does it in one swoop, and deletes the entire word without fail no matter where you are inside the word.
ciw - This is also kind of used in tandem with the command above. When you want to change the word alone, you do not want to delete the space after it, so using the i movement here is a no brainer. This lets you edit the word without hassle.
F<space>xp - Fixes transposition errors.
ddp - Swaps the line you’re in with the line below.
ye and vep - This is for when you have to replace a word with a word you just yanked from somewhere else. This is especially useful because this doesn’t involve the deletion commands and having to deal with the unnamed register now having the old text.