Very simple job. Unclip abs sensor and handbrake cable. Remove caliper and disc. Undo 4x bolts holding bearing housing to hub and remove. Soak the bolts in wd40 over night as they can be a pain to get out if seized. It's definitely worth getting new bolts as you'll chew the heads up removing them.

eBay bearings are cheap, and don't last long. I got through a pair in 6 months.