All you need to do is read the
Tier 1 policy guidance, understand the concept and the kind of documentary evidences you need. It is all claerly explained in there. Make an effort to
search the forum 'coz there's loads of information already available that will, in all probability, address any concerns you might have after going through the guidance. And if you still feel unsure about something, post your query on this forum and people will very happy to offer you suggestions.
But, it won't be appropriate to ask others to do the hardwork and compile a one-stop-shop list for you. Everyone is here to help others on the forum, but not necessarily to work for them.
This isn't rocket science, it's just a simple application.
regards