vim tool is a commom editor, for the sake of improving effeicient, it is necessary to configurate vim config file. The following comands will help you.
vi ~/.vimrc #.vimrc is the config file of vim tool
set number # show line number
set hlsearch #show highlight for searching
set tabstop=4 #set tab key,which is equal 4 blank spaces
set ignorecase #ignore upper and lower character
set incsearch #I don't remember now
set nu #cancel line number