Co2 exchange , finding the space needed for keeping a pressurized vessel cold , and $ are your three bottlenecks. Figure those out first.
everything else is next.
although I have a few ball lock kegs . I do a fair amount of what Ill just call dispensing from a PET vessel.
it may not fit the definition of kegging so I’ll leave it at that.
bottling beer in pet bottles is frowned upon so serving out of them under pressure is very likely to also not be encouraged but I see many people serve out of there pressurized FV,s. Many of which are PET so make your own judgement.
carb cap tee pieces are by far the lowest entry into kegging.....Sorry I mean dispensing liquid out of a cold vessel under pressure.
anyway, A carb cap tee piece mini reg and some kind of tap. (This is very important part) will get you started on dispensing beer with co2 which is really what you are after. You can do odies method also which definitely works but I hate those little dog dick co2 cartridges. for a lot of reasons that I won’t go into now. They are great in emergencies and keg travel but not worth the hassle for anything else.
If you have the space, money, and a way to take an empty gas canister to and from a place that’s willing to exchange it then do that instead. get a full size kegerator co2 tank and a corny. You can get off Amazon or more beer plugvand play.
if you want to start small and cheap get a carb cap tee piece. They are always expandible and versatile and when you move to full size kegging with and 8 tap chest freezer converted keezer with tap list and Plato scales you will still find plenty of uses for your tee piece trust me.
