Hello! This is a very good question, and a very broad one too! This response will be a lot of links but please let me know if you have any specific questions not answered here and I will be happy to help out more!
Here are a few good ‘cover alls’ for bone collecting:
A lot of stuff depends on your location (mainly weather and laws) and also your access to supplies and what sort of animals you get. A good thing to bear in mind is that patience is a MASSIVE thing too. Part of the reason I am so terrible at processing is because I have no patience!
AS A SUMMARY: my personal method is to find a dead, skin it, gut it as much as possible, bury/macerate (I often combine the two and i call it The Swamp Method) then degrease with fairy liquid- always brand name, and then whiten with 12% peroxide. I hope these links cover all you wanted to know and I am super happy to answer anymore questions you have! Just to finish off, here is a big list of all my fav vulture blogs that come to mind. There are more out there but these guys are definitely worth a follow if you want more vulture content and more processing insight!