To make a Walmart grocery list, click on any product for sale at Walmart.com, then click Add to List. A dialogue box opens and provides the option of starting a new list, naming it and adding the item to the list.
You do not have to create an account at Walmart.com to take advantage of the shopping list feature. However, having an account allows you to save and share lists. Each time you add an item to a list, Walmart.com displays your previous lists and allows you to update them.
You can also click any list to review items on it. Depending on the brick-and-mortar Walmart that you declare as your store, the pick-up availability of each item on your list corresponds to your selected store. You can also prioritize items according to those you need or want.