He'll need to be kept indoors for a few days, somewhere reasonably warm and quiet, (keep kids, dogs cats etc away) where you can keep a close eye on him. He will need to be confined so something like a puppy crate is ideal, half covered with a towel so that it is fairly dark at one end. It is best to use something like soft towels or vetbed as bedding rather than hay, straw or shavings, as these may stick to the wound and cause irritation. He'll need a litter tray- shredded paper would be ok as litter. He will still need hay so this is best provided in a hay rack.
Expect him to be fairly sleepy when you first get him home so try not to disturb him too much. If he has a bunny companion, he wil be happier with them by his side (separated by wire if the other bun is boisterous or bothering him). A snugglesafe may provide additional comfort, but make sure it isn't too hot.
You will need to provide water in a bowl as well as a bottle because some buns find bowls easier when they are recovering from an op.
Stock up on his favourite treats and tempting things as he may be reluctant to eat at first but it is important for his guts that he eats as soon as possible. Herbs such as parsley, carrot tops and dandelions, plus fresh grass are good for tempting a bun to eat. If he isn't eating by the following day, contact your vet.
He should have been given a pain killer when he had his op, and possible a gut stimulent. They may need to see him for additional pain relief, or they may give you some to give at home. Signs of pain are sitting looking 'hunched', panting, loud tooth grinding and reluctance to eat.
Check the wound twice daily for any signs of swelling, discharge, funny smell etc and contact the vet if you notice these, or if there is bleeding.
He must not be allowed to chew the wound as he may damage himself. contact your vet if he is chewing for advice.
There may or may not be stitches. If stitches are used these are normally dissolvable. Sometimes a special glue is used.
The vet should arrange rechecks, and advise when he can go back to his normal routine. Make sure you follow their advice, and ring if you have any worries.
Hope this helps
Edit: you can may a siggie on photobucket xx