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You don't need permission, a subscription, or a data center. You need one spare machine and an order to do things in. This is the order. Work down the list, and by the bottom you own the whole stack instead of renting it.

Each step is a full field log: the story of why and what broke, and a build layer with real commands. Do them in order if you're new, because each one leans on the habits from the last. Skip around if you're not. Nothing here costs more than a drive you already have and an evening.