if you get one from an adoption center then they normally come fully vaccinated and microchipped so it`s worth considering. i managed to have my boy neutered free of charge through the cats protection as they do a neutering scheme so you could find out if you qualify for help. if you get a boy then you definitely wanna have him done around 5/6 months otherwise he`ll start marking his territory!
make sure you have a scratching post, they can be bought quite cheaply argos do a really good one for under £10 and it has a bed on top which saves the expense of buying one (i bought a bed for mine an all he done was wee in it

preferred sleeping on the scratching post)
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owned by:
jake - chocolate labrador
sydney - liver/white english springer
twix - dlh cat
lacey - dsh cat
never forgetting my baby banjo running free at the bridge, RIP baby xx