Open a new line below with o or above with O, then enter Insert mode. This is the quickest way to add whole lines.
Commands you practise
o
Press o to open a clean line below your cursor and instantly drop into Insert mode. It is the fastest way to add new lines of text.
O
Press O to open a new line above the cursor and enter Insert mode instantly. It is the cleanest way to insert missing items in a list or code.
Levels
Scrambled Steps (easy): Insert the missing middle step directly below the first line.
Header Expansion (medium): Insert a header comment above and a new key-value pair below the section header.
The Master Recipe (hard): Expand this flat structured recipe with comments and missing steps using both O and o.
Each level opens a real Neovim session in your browser with a start file and a target file. Edit one into the other in as few keystrokes as you can, then race the vimbot's solution.