The biggest life changer to me back when I worked with Mikrotik gear was learning that the '?' character was an immediate "Show me all of the commands I can get

The biggest life changer to me back when I worked with Mikrotik gear was learning that the '?' character was an immediate "Show me all of the commands I can get to from the current prompt", and then appending '?' to existing commands would show all of the sub commands available etc. From that point I found the CLI to be relatively discoverable as a way to configure the devices.