Very simple to do sometime between 28-30 January watch the birds in your garden for an hour and record what you see. You can get full details and a free pack from https://ww2.rspb.org.uk/get-involved/activities/birdwatch by post or you can download it.
Currently in our garden we are getting Blue and Great tits, Coal tits, Chaffinch, Nuthatch, Longtailed tit, Robin, Blackbird, Woodpigeon, Great Spotted Woodpecker and Dunnock. We also have lots of Phesants!
In the woodland outside the garden we regularly also see Tree creeper, Tawney owl, Jay and Magpie and in the fields Starlings Fieldfares and Redwings as well as Crows and Rooks. Above us we see Buzzards, Ravens and recently Kestrels.
The injured starling is still about and is starting to fly a bit so fingers crossed for it making a full recovery.
A great help is this BTO collection of youtube videos on how to identify birds, the good thing about these is they show you how to tell the difference between easy to confuse species. https://www.youtube.com/playlist?list=PLE3B611F475AA00AF