Just google it. If you want help preparing then you need to describe your situation and your wants and plans, and goals, limits, and no-goes.
This is one of the blogs that I consider extremely worthwhile. She dosen’t sell anything, except her how-to and where-to-find books. Very interesting.
https://prepschooldaily.blogspot.com/
mredepot.com
I have found these guys to have reasonable prices and good quality stuff:
https://www.stealthangelsurvival.com/
I get stuff from Emergency Essentials: https://beprepared.com
They often have sales.
Also Costco has freeze dried products.
I will just order from amazon when i need something
Prepping by its nature implies stockpiling large quantities of food. If you want individual packets of dried milk go to Kroger. You can buy a box with 3-4 individual packets inside.
Plain yoghurt. I’ve found some in the back of the fridge that had a sell-by date 3 years back and it was still good to eat. Amazing stuff.
:^)
Nobody mentioned books. The “Foxfire” series contains a lot of information relating to survival. There are many more like them. You’ll need them because no matter how much you stock, it won’t be enough for a really long haul.
Go to Augason Farms website. Everything you could possibly need. Includes recipes, tips, articles too. And most of their products taste good to boot. I love Augason Farms. One stop shopping for whatever you may need.
to keep track of everything you have and need set up an excel spread sheet
I am nowhere near professional-level on this, but Costco or BJ’s, or even Sam’s club can be very economical, and they offer a lot of stuff like dried milk in bulk. If you can find one in driving distance, it is worth a monthly or bi-monthly jaunt, IMO.
I have stuff I like to eat, like canned chicken, canned tuna, canned salmon, as well as whey protein and other fairly shelf-stable stuff I buy in massive bulk, and eat and keep replacing, keeping a good up to date stash. Costco canned chicken is so good you can microwave it, and have it every night plain if you like, and it is delicious.
They also offer buckets of prepper stuff, so in the back of their minds seems to be some desire to appeal to people who stock up for emergencies.