Hi Alan & welcome to the BBS m8. Nice rifle also. Regarding pellets, you really need to be trying alot of the different manufacturers brands as no 2 rifles are the same. A trail sample pack is available from Pellpax which has around 38 different brands of pellet and 10 of each pellets. Look here at their website Pellpax.
As for the pump they are all very similar really. But it's not an easy job, you'll probably end up buying a bottle after a few fills unless your a keep fit fanatic.
HTH,
Dave.