Just brush. You'll be surprised how much fur you remove. You may need to get him adjusted to being brushed. Lots of positive reinforcement and treats can help. My cat doesn't like being brushed but she tolerates it. I do it in short sessions and give her lots of praise for being a good girl while I do it. I brushed three handfuls of fur off her today. :)

There are many kinds of brushes. I use ones like these and they work well: 1 and 2.

This kind of rubber brush is awesome at removing fur from blankets, cushions, carpets, and other fabrics.

Vacuuming and sweeping frequently helps too.

Still, I keep lint rollers at home, in the car, and at work. Cat hair just gets everywhere.

No need to bathe unless it's a hairless cat or he gets dirty.