I started with this website I think
https://electronicgeektips.wordpress...aspberry-pi-2/
Then did a little googling and youtube watching. Used a RP2 with a USB dongle for wifi. The new RP3's come with wifi built in and basically cost the same. Ended up using a Logitech C270 webcam I bought on ebay for about $15
There is info on the Repetier Server website as well. All the software is free.
Perry