Tip the glass and view against a white background. You can learn a lot by a wine’s colour; white wines gain colour through ageing, reds lose colour.
Giving the wine a swirl introduces air into the wine to release vapours and aid smelling.

Tip the glass up to your face, sniff through one nostril and take in the full range of the wine’s bouquet of aromas.

Repeat with the other nostril; that’s the way I do it. Smelling the wine will tell you if the wine is off (musty if it’s corked) and is the important first part of the tasting. Take a good sip and move the wine around all parts of your tongue and mouth to discover all the taste sensations. Sit back and savour the wine at your leisure.