2. Half of good presentation is better than finished dull one. Leave as soon as you see idiots.
3. Always have selected alternatives.
4. Ops/devs tracks are better than presentations - presentations goes to youtube.
5. Check the names of speakers. If you are selecting between two interesting topics, choose one with no inidia/china/fr/it/de guys.
6. Stay away from the panels. They are waste of time.
7. Lightning topics are the best. 10 items per one presentation.