Blender Hotkeys

The Default Keymap page says it is not a comprehensive list and shows common keys used in Blender's default keymap.

Blender has two main selection modes: left-click select and right-click select. Left-click select is the default because it is the most common in other applications, and the Select with Mouse Button preference controls this.

The Keymap editor lets you change the default hotkeys for each of Blender's editors. Find the operation, choose whether it is triggered by a keyboard key, a mouse button, or something else, then click the button on the right and press the shortcut you want to assign.