I bought two tiny 2350. On the package the link to the product page is advertised, which is a helpful idea.
On that page though I miss some more introductory information.
There is the nice pinout diagram, but there a no hints anywhere which of the wealth of pin descriptors are to be used in a micropython program.
Apparently Pimoroni provides their own library for micropython, called pimoroni. I do not know much about it. I had expected the product page to point to some documentation, where to find it, what it can do, how to get it onto the device.
Btw., somehow I had expected the micropython build Pimoroni provides to include that library. It does not.
To conclude, the attempt the product page makes on giving a new user a good start could to more.
As you do not give us any information about your intended usage or current level of knowledge (beyond “new user”) all I can suggest is that you review the Raspberry Pi documentation for the Pico 2, This uses the same microcontroller chip and the MicroPython builds (and C/C++) for the Pico 2 will run on the Tiny 2350. Just bear in mind that there are fewer GPIO options on the Tiny. There are also lots of getting-started videos for the Pico range if you search for them. Have fun! They are useful little boards with amazing capability for their size.
Builds of custom MicroPython for RP2350 boards can be found here. I think the pimoroni module should be included in the most recent build, but if not you can find it here. You’ll need to save it to your Tiny with the filename pimoroni.py.