How do you learn by ear?
Your tutor will play a short phrase and ask you to copy it. Depending on your level this may be just a couple of notes or it may be a couple of bars. They will tell you which note to start on and they will help with other notes if you are struggling to figure it out. The class will play round the phrase lots of times to make sure you know it really well before moving on a new phrase. Once you have two phrases you might try joining them together and in this way the phrases will build up like a jigsaw until you have a whole tune.
How will I remember the tune when I get home?
Your tutor will give you the opportunity to record the tune during the lesson. If you don’t have a specific recording device you may find you can record using your phone. Your tutor will often give you music at the end of the lesson. For those that don’t read music your tutor may have a simple tablature version too.