Ok a few tips I picked up with my first cat!
Wet food is important for male cats. Butchers classic is cheap, Lily's kitchen, natures menu, applaws more expensive but good. Have a look on zooplus for offers
Feed the absolute best quality, highest meat content you can afford to but cheap wet food is better than cheap dry food
Zooplus also deliver cat litter which is a godsend!
Get a pets at home rewards card
Insurance. My male cat had a £400 bill this year, Tesco happily paid out
Flea and worm, best stuff and most effective is from the vets, don't touch bob Martin stuff with a barge pole
Try different toys like ribbon, balls with bells in
Get a flat scratch box, cats seem to prefer them. Pets at home do one which is cardboard and has a ball and catnip in
Expect short bursts of energy and then a giant nap!