I just got El Capitan.

Spotlight is glorified feature of OSX i have not used too much.

I'm used to just doing a old fashioned search in finder windows. I would like to appreciate spotlight more, but tonight, I do a search, and put an i, in the spotlight field, it finishes the word for me but not the word I want. It's starts indexing this word I don't want to search, and two hours later is still indexing, and I can't get the spotlight window to vanish, even with escape key.