Reading a list won't make them stick. ShortcutFoo has you type each shortcut, then brings it back just before you'd forget it.
Editing I
7 shortcuts- ^⇧↵Insert line above
- ^↵Insert line below
- ^⇧KDelete line
- ⌥⇧UPCopy line up
- ⌥⇧DOWNCopy line down
- ⌥UPMove line up
- ⌥DOWNMove line down
Editing II
5 shortcuts- ^⇧]Unfold region
- ^⇧[Fold region
- ^[Outdent line
- ^]Indent line
- ^⇧\Jump to matching bracket
Editing III
7 shortcuts- ⌥ZToggle word wrap
- ⌥⇧AToggle block comment
- ^/Toggle line comment
- ^K^JUnfold all regions
- ^K^0Fold all regions
- ^K^]Unfold all subregions
- ^K^[Fold all subregions
Multi-cursor / Selection I
6 shortcuts- ^⇧LSelect all occurrences of current selection
- ^LSelect current line
- ⌥⇧IInsert cursor at end of each line selected
- ^UUndo last cursor operation
- ^⌥DOWNInsert cursor below
- ^⌥UPInsert cursor above
Multi-cursor / Selection II
6 shortcuts- ^⌥⇧LEFTColumn box selection left
- ^⌥⇧RIGHTColumn box selection right
- ^⌥⇧DOWNColumn box selection down
- ^⌥⇧UPColumn box selection up
- ⌥⇧LEFTShrink selection
- ⌥⇧RIGHTExpand selection
Search / Replace I
7 shortcuts- ^K^DMove last selection to next Find match
- ⌥↵Select all occurrences of Find match
- ^DAdd selection to next Find match
- ⇧F3Find previous
- F3Find next
- ^HReplace
- ^FFind
Rich Languages Editing I
6 shortcuts- ⌥F12Peek definition
- F12Go to definition
- ^K^FFormat selection
- ⌥⇧FFormat document
- ^⇧SPACETrigger parameter hints
- ^SPACETrigger suggestion
Rich Languages Editing II
6 shortcuts- ^KMChange file language
- ^K^XTrim trailing whitespace
- F2Rename symbol
- ⇧F12Show references
- ^.Quick fix
- ^KF12Open definition to the side
Navigation I
9 shortcuts- ^MToggle tab moves focus
- ⌥RIGHTGo forward
- ⌥LEFTGo back
- ⇧F8Go to previous error or warning
- F8Go to next error or warning
- ^⇧MShow problems panel
- ^⇧OGo to symbol...
- ^PGo to file...
- ^GGo to line...
Editor Management I
5 shortcuts- ^3Focus into 3rd editor window
- ^2Focus into 2nd editor window
- ^1Focus info 1st editor window
- ^\Split editor
- ^KFClose folder
Achievement unlocked