Switching to this mode is dead easy, too.
As, the takes-three-seconds kind of easy.
Wait a few seconds, and thats it youre in.

Want to go back?
Desktop Mode on the Steam Deck: Do I need a mouse and keyboard?
Prodding the touchscreen instead of clicking via the trackpad works too.

However, I will say itsdrasticallyeasier to get around with a proper mouse.
The latter option is particularly suitable, as you might prop your Steam Deck upright for easier screen viewing.
Like you actually are using it as a desktop PC, and the Deck is its own lil monitor.

Dolphin
Desktop Modes file explorer.
Do have a poke around it, though.
Getting to know it beforehand wont hurt.

This reveals a whole bunch of folders that are kept invisible in the default view.

