- Would you like to know how to provide first aid in the event of an emergency? The Orange Cross book contains the official course material for the First Aid Certificate. Handy, practical, and understandable for everyone. By means of clear colour photos and step-by-step instructions, you learn what to do and why. The instruction videos are new, you can watch them via the free Layar app. This clear book is suitable as course material and as a reference book. This 27th edition of the Orange Cross book is completely revised due to new insights and developments, and complies with the current Dutch First Aid Guidelines (2016).