Hey Can you mine GRIN on a raspberry pi and if yes can anyone point me to a tutorial?
According to GRIN documentation you need a CPU + a GPU with at least 6GB VRAM, so unfortunately no you cannot. See here: https://github.com/mimblewimble/docs/wiki/How-to-mine-Grin
You could turn your Raspberry Pi into a full node though!
what would turning it into a node do?
Enables you to validate transactions and adds security to the network, simply as another set of eyes watching for anything invalid going on.