Guide and Preparation for Candidates – understand and prepare for GESE Grade 5.Trinity GESE Study App - an online tool which can be purchased when you book your test or before by calling our Customer Service team on 03.That’s why Trinity College London is proud to offer B1 exam preparation study materials and resources to give you the best chance of passing your SELT test. If you have a B1 SELT test booked you may wish to practise your English to ensure you are prepared for the exam. Frequently Asked Questions about B1 SELT preparationīook your B1 (GESE Grade 5) Guides to help prepare for the B1 GESE SELT test.What happens after you’ve booked your SELT?.Guides to help prepare for the B1 GESE SELT test.