This is the theory of SCUBA diving

As part of the course you are given a PADI Open Water manual, this takes you step by step through theory of diving, and tests as you go. Our instructors will look at these tests, or knowledge reviews, and fill in and expand any gaps or misunderstandings in what you've learnt.
Whether in a class room as part of our intensive course, or before the pool sessions on our standard course the PADI manual and our instructors at Beneath The Waves can guide you through the course, helping you with teaching aids to visualise and understand the theory of SCUBA!