A very handsome silver mackeral tabby.....He's definitely at least a Medium Longhair
, but likely not as long a coat as a Persian.
Yes, definitely groom him every day with a polished stainless steel grooming comb that has finer teeth on one side of it and wider on the other
, available at Amazon and pet stores. The comb slides through the coat better than a brush which can cause static and may pull out too much coat. Start with the head and let your cat rub his cheeks against the comb and then gradually comb the top of the head, chest, back and sides, and leave the tummy as he may be ticklish. Have your treat bag nearby, talk to him in a sweet singsong voice, stop if he shows annoyance or aversion, continue with a few strokes more, and then give him a treat---always end the session on a happy note! Most cats will come around to looking forward to a daily grooming as a special time with you and it can be a good bonding experience for you both.
Also clip his claws about every 3 weeks, just the tips so you don't cut into the "quick" (vein), and give him a few treats afterwards. Always do your grooming in the same place, such as a bathroom or laundry room with a door and countertop in event your cat wants to get away......my cats jump up and start purring as soon as I get the clippers out, or a comb (tho Devons need very little grooming).
You'll find during late spring and early fall is a time of "coat drop", and grooming every day eliminates a lot loose hair and avoids hair balls. Happy grooming!