[normal mode]
f{char}         - move cursor to the character {char}


[visual mode] - with selected lines
gq              - formats text so that it fits in whatever :set textwidth was set
iB              - select block between curly braces (:help object-select)


[commands]
:spell [word]   - adds a word to the current dictionary (no mistake any more)
:set list       - display non printable characters
:retab          - replaces tabs with spaces
:set expandtab  - in insert mode: replace tab with spaces   


[navigation]
<CTRL-]>        - look up the tag under the cursor (help links as well)
<CTRL-T>        - return back from tag under the cursor


[macros] - record and play back a series of vim commands
qa              - start (q) macro recording in register a (can be anything)
q               - stop macro recording
@a              - replay macro a
:'<,'>normal @a - apply a to every line in the current selection


[marker]
ma              - set marker a-z (a in this case)
'a              - go to marker a


[hotkeys]
<C-A>, <C-X>    - increment, decrement number under the cursor


[windows]
<C-W>v          - splits buffer vertically (screen uses |)
<C-W>s          - splits buffer horizontally (same as screen)
<C-W>w          - moves the cursor to the next window and back
<C-W>[dir]      - moves the cursor in that direction (use hjkl or arrow keys)


[vimdiff]
do              - get changes from other window into the current
dp              - put changes from current window into the other
]c              - jump to the next change
[c              - jump to the prevous change
zR              - opens all folds (unfold all)