With it being all new kit you'll just need sanitiser,or should do. Give it a rinse first As you progress and get everything cankered you'll need cleaner AND sanitiser. For cleaning I use oxi,pure sodium percarbonate,bought off eBay very cheaply. For sanitising I use either starsan or malt miller's own version,both a no rinse,acid style product. You don't need to fill to the brim unless the vessel is very dirty and needs soaking. Cleaning can be done by swishing the solution round and using a SOFT cloth...take care not to scratch your buckets etc as muck and bacteria can get in there. As with cleaning,sanitiser can be swished around the bucket and also applied with a spray bottle. The no rinse stuff is great just spray it on and drip dry/shake off excess.