Looking for some tips to be more effective at my job. I do overnight stocking at Wal-mart.

First thing you might be thinking is who cares it's wal-mart; but if you're gonna do something you might as well do it right. Anyways! I've been doing overnight stocking for about three months now and I'm usually in grocery. I've been thinking that I want to be able to go faster for a few days now (even though I already go faster then most of the others) and I thought here would be a good idea to get some tips from people that have been in the field before/are still. Thanks in advance!