How do I browse/explore directories from within Vim?

You can use the netrw.vim plugin, supplied with the standard Vim installation, to browse/explore directories from within Vim. You can start the file explorer using one of the following commands:

    :e 

    :Explore

    :Sexplore

    :Vexplore

    :Texplore

From the file explorer, you can browse through directories, rename, delete and edit files.