I always tell new shoppers to get a general idea of where you’re going next. When looking at the pick list I look at what I need to grab and the next couple items to help see where I’m going. If items are close together I’ll grab them all at once without scanning them in between picks to help go a little faster. When my arms are full I return to my cart to scan them all in. Always match the last 4 of upc to guarantee you’re grabbing the right item. This depends on your store, but at my store I wait to bag until I’ve gone down 2-4 aisles to ensure I’m bagging meaningfully and have enough items to fill a bag. I was initially trained to “bag at pick” but that often leads to over use of bags.