Hi Rob and welcome back.

I would add to the advice given by AndiDee above that the Silhouette Portrait is basically a new Craft Robo. It uses the same A4 cutting mats whereas the Cameo uses 12x12 cutting mats. Robo Master software became redundant and us owners of the Craft Robo were able to use Studio software. I could only cut with the Robo Moster software where now I can do a lot more with Studio. No drivers needed to use the Studio software (unlike the Robo) and your computer sees it as a printer. So just follow the settings for a Silhouette Portrait.

Download and install Studio before connecting your Craft Robo to your computer.

The blades have changed and are now ratchet manual or auto (depending on which Silhouette model) with numbers 1 to 10. If using the old blades with the coloured caps do not go above 3 or 4 which is equal to the old pink cap.