Help browser all variables, methods of this source code.
It's easy for you to choose any item you want with friendly interface.
You download Taglist plugin from http://www.vim.org/scripts/script.php?script_id=273
You unzip the file, and copy /plugin/taglist.vim into ~/.vim/plugin/ (command: cp taglist.vim .vim/plugin/).If doesn't plugin, You can do step by step
cd .vim
mkdir plugin
cd ..
cp taglist.vim .vim/plugin/
Open the Tag List Window in Vim using :TlistOpen