Follow the following tips to get most of your introductory flight --
Do some research to find out the right training center and that offers training at right cost.
Find out the right flight instructor who has a good background in training.
Once this is decided, ask the training school for syllabus ot outline of training
Training outline will give you an idea of the order in which flight training will be given and help ypu track the progress too.
You can always prepare yourself before going for the session by learning about the session from internet and hence can better focus on the practical.
Join airport community and build relationship with other instructors as well as students. They can offer you great advice
Don't get distracted. Ask you instructor if something is disturbing you.
Learn to organize the cockpit
Show up for each lesson. Try to understand the things with full concentration and clear any doubts from previous lessons