Ultimate PI is a version of the Raspberry PI OS with the Cinnamon desktop installed by default.
It includes a web browser, office suite, audio player, media player, email client, graphics editor, photo viewer and many other applications.
A computer with an SD Card Reader
An SD Card (recommended 16 gb or above)
Download the Ultimate PI image.
Download the Raspberry PI Imager
Open Raspberry PI Imager and click "Choose OS".
Click on "Custom OS".
Choose the downloaded Ultimate PI file.
Click "Choose SD Card" and select the SD card you wish to install Ultimate PI to.
Click "Write".
Put the SD card in your Raspberry PI and turn the power on.
The default user is pi
The default password is ultimate
How To Create An SD-Card Using Raspberry PI Imager
How To Overclock A Raspberry PI
How To Boot A Raspberry PI From An SSD (Note to boot from SSD you will need to install piclone).