I started learning on two ERA replacement cylinders, repinned them and worked up from there and plenty of space, should be able to pick them up for 10 pounds, alot cheaper on EBay. Your problem with single pin picking may be the sise but repinning a lock to one or two will be a good starting/refreshing point if your jsut out of practice.
Repinning guide:
viewtopic.php?t=10505
As for holding, padloscks I find are comfortable to hold and pick, replacement cylinders I usually hold surrounded by thumb and middle finger with the index finger applying tension. Other wise you could create a lock board cheaply to hold several cylinders and padlocks from a piece of wood, a third option and my personal choice is a small hobby vice.