I find it funny how you suggest your readers to install so many plugins (some of them incredibly pointless), and the plugin manager of the day, for "getting more from vim" after such a superficial series of posts in a series called "learning Vim".
http://benmccormick.org/2014/07/07/learning-vim-in-2014-work...
was ridiculous.
In "Buffer Management", you don't talk about :find or command-line completion or the wildmenu or the possibility to use mappings or the fact that one can use buffer names to navigate or tag-based navigation. And under "Plugins", the following sentence (and the mandatory list of plugins) is not really helping you to get your point across:
The good news is that Vim has solutions. They're just not baked into the Vim core.