1. Record and play temporary macro
Ctrl+Shift+R to record a new temporary macro. Press Ctrl+Shift+R to stop recording. Ctrl+Shift+P to play the recorded macro.
This works similar to *recording* in Vim. If you think you are going to be repeating a set of keyboard keys, then record them once and play them each time after.
2. Multiple copy/pastes
Ctrl+Shift+V cycles through the clipboard ring. You can copy/cut multiple times from one area of code, then go to another area and paste them one after another.
3. Drag and drop code snippets
The Toolbox (Ctrl+Alt+X) window has multiple tabs. You can drag and drop code onto this window and copy it elsewhere. Some tabs do not allow dropping code into them; those that allow will have the appropriate icon. The General tab works for me.
4. Previous cursor positions
Ctrl+- i.e. Ctrl + Hyphen. This cycles you through the code positions you visited.
Ctrl+Shift+- to navigate in the opposite direction.
5. Incremental search
To incrementally search for text as you type, first press Ctrl+i. Then type the word you want to search. Hit backspace to clear a character and enter to finish. Pressing F3 after this will work as usual, i.e. search for the next occurrence of previous search.
Ctrl+i - Ctrl+i works like F3.
6. Matching brace/comment/region/quote
Ctrl+] takes you to the matching brace. It also takes you to the matching comment, region or quote depending on what is at the cursor now.
7. Vertical block selection
Press Alt and then select the area you want with your mouse.