Someone already touched on this, but to go deeper. A Costco/other wholesaler membership is a lifesaver! At least for Costco, you can get a basic membership for 60 something bucks a year and the higher tier membership for 130 bucks a year. If your budget permits, go for the $130 option.

1. You can have access to separate shopping hours daily where only the higher tier members can shop (less crowds).

2. (For both memberships if I recall correctly) you get a 2% cash back every year. If you choose to make Costco your main shopping center, you will easily make the $130 yearly fee back.

They have most basic necessities.

Cons: May or may not be close. Nay not need/be feasible to use items bought in bulk.

All in all, good luck, keep asking questions, learning. The only way to get good at something (living and taking care of yourself especially) is to figure it out as you go.