Hello and Big Garden Birdwatch

Hello. First post so forgive me if I'm not using the correct etiquette!  I started 'inviting' birds into my garden a year or so ago after watching amazing masses of goldfinches on sunflower seeds in my dads garden. I had never even seen a goldfinch before and now I have them and many other species in my own garden. My favourite time to watch them is Saturday morning when I'm not at work with my first cup of tea and total peace! I signed up for the big garden birdwatch online and received confirmation by email but haven't received anything relating to a download or a link to anything I can fill in next weekend.  Can anyone help with this? Thanks.