Add Help For Non-Normal Mode Features as a vim til.

README.md

@@ -58,6 +58,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 - [Close the Current Buffer](vim/close-the-current-buffer.md)
 - [Generate and Edit Rails Migration](vim/generate-and-edit-rails-migration.md)
 - [Head of File Name](vim/head-of-file-name.md)
+- [Help For Non-Normal Mode Features](vim/help-for-non-normal-mode-features.md)
 - [Horizontal to Vertical and Back Again](vim/horizontal-to-vertical-and-back-again.md)
 - [Interactive Buffer List](vim/interactive-buffer-list.md)
 - [List All Buffers](vim/list-all-buffers.md)

vim/help-for-non-normal-mode-features.md

@@ -0,0 +1,28 @@
+# Help For Non-Normal Mode Features
+
+The majority of your time in vim will be spent in normal mode. You will
+often look to the documentation for help on any number of commands and
+bindings available in normal mode. For instance, to find out more about
+*goto file*, you may do `:h gf`. And if you want to read more about
+*yanking* lines of code, you may do `:h y`.
+
+But what about commands and bindings that aren't found in normal mode? What
+if you want to read about *yanking* text from visual mode? What if you want
+to get more details on insert's x-mode? Doing `:h y` and `:h ctrl-x`,
+respectively, won't do the trick because vim thinks you are talking about
+normal mode bindings.
+
+The docs for these and other non-normal mode features can be found by
+prepending `i_` and `v_` to the binding in question.
+
+To get at the docs for *yanking* from visual mode:
+
+```
+:h v_y
+```
+
+And to read up on insert's x-mode:
+
+```
+:h i_ctrl-x
+```