I think I just lurked around this sub for so long but finally decided to join

And here I am, finally decided to post. Novice here so please forgive-lnd me. Graduating college in a few months. I lurked this sub for months and lurked around for months and read through reddit. I thought I joined but that was an alt so scratch that. I lurked for months. Just wanted to know, what are some essentials for keeping your pantry clean? Are there any must haves in your pantry?? I have food allergies-lnd so I have to be extremely mindful of what I am consuming. I can’t wait to dive deeper into meal prep week after week. I am excited. I have been cooking for months now. The things I can’t eat are a lot so that is why I want to keep a clean pantry. I really don’t want to start thinking about meal prepping till I turn 25. I am really eager to start. Just wanted to know what are some essentials I should keep in the pantry. Also, I have never used a meal prep or tupperware set before. Just wondering what would be a good brand to buy.