Does Walmart still deliver to your home for free? If so, what are the rules? For example, does your home need to be within so many miles of the store? Is there a minimum purchase amount that must be ordered?

You get free shipping on most items but the order has to be over a certain amount, I think it's $35 or $40 it will tell you that when ordering since some places are 3rd party and don't participate in free shipping

Usually Walmart can deliver anything and anywhere in US that you can find in store. There is no minimum as such but shipping cost may vary based on your order amount and place of delivery.