option + dbl_clickto multiselect entire words.opt + cmd + ↓selects multiple lines- Pasting multi-line content into multi-line cursors distributes them, for example, among list items
cmd + dselects additional instances of the highlighted codeshift + cmd + lselects all instances of the highlighted codeshift + →expands selection one spaceshift + option + →expands selection one text groupingshift + cmd + →expands selection to end of lineshift + cmd + 6to move cursor to matching tag
To set a shortcut, go to File > Preferences > Keyboard Shortcuts and search for the one you want. Hit the + next to it and type your combo.