This small display has a dedicated socket on the back for a Pico. Use it to display colourful images.
Your pico should be running a version of Micropython. See here for details.
Plug your Pico into the back of the display, making sure to place the USB connector on the end marked 'USB':
Pick up the code from Github and add it to your Pico.
See code on githubRun the code. You should see some coloured rectangles and text:
A full reference for this display can be found on the WaveShare website:
WaveShare Pico LCD 1.8