Watch Michael's walk-through video all the way through once, and then rewind to the beginning of the process and pause it as you complete each step. That should do it for you, but if you do happen to get hung up anywhere you can ask questions in the Telegram channel dedicated to BEOS. There are hundreds of people there who have successfully staked their bitshares to participate in the rainfall: https://web.telegram.org/#/im?p=@officialbeos