CtrlP is a fuzzy completion plugin that helps you open the files you need quickly, given that you somewhat know what you're looking for. CtrlP is available from https://github.com/ctrlpvim/ctrlp.vim (see the Installing plugins section earlier in this chapter for installation instructions).
Install it and hit Ctrl + p:
This shows the list of files in the project directory. Type in a partial filename or a path, and the list of files will narrow down to string matches. You can use Ctrl + j and Ctrl + k to navigate up and down the list, and Enter to open the file. Esc closes the CtrlP window.
CtrlP also allows you to ...