Help me please to understand this

[Kiryl Ulanovich]

as a flipper, with the participation of a wholesaler and a hard money lender, what actions should I take BEFORE I close and buy a house (tell me step by step please because i dont really understand the sequence of events) and also please tell me when to do due diligence to make sure how much does it cost to renovate the house and is it worth buying this house?