What do the f and t commands do in Vim?

Question

Can somebody explain to me what the f and t commands do in vim and exactly how they work? I can\'t seem to find this information but people keep telling me

Answer 1

I find f and t very useful in combination with d and c. For example, ct: will let you replace everything from your cursor up to the next colon, but not delete the colon. You can remember it as "change to colon".