How To Use The Library Before You Book
Start with a few full talks to judge the basics: energy, presence, how the room responds. Then sample across different settings, a corporate audience, a conference, a shorter session, to see whether the quality holds when the room changes. A speaker who is strong across varied rooms is one who will likely be strong in yours.
Then bring in the testimonials and reviews. Watch a talk, read what organisers and audiences said about sessions like it, and confirm the footage and the words agree. When they do repeatedly, you have verified the booking as thoroughly as it can be verified in advance.
The channel holds the full library. This page and the pages linked below are the fastest way into it.