This is a VIM tip. I saw it before, but I forgot it after a while. I saw it today, I don’t want lose it again, so I write it down.
When you are going though a document in VIM, you find a word and you want to go to the next same word in the document, you just need to put the cursor on the word and press * (SHIFT + 8).
What if you want to the previous one? Answer: # (SHIFT + 3).