There's no success in heading into a raid instance or a raid encounter without reading up on the tactics beforehand. As it's everyone's own responsability to know the tactics for the fights before they start, it'll be expected from people attending (and even signing up for) raids to know what they'll face. This is basicly to lower times in between tries and fights, but also out of general courtesy as everyone else will be doing it, and no-one would want to wait for just a selected few to not know the fight, forcing a recap just taking time.

For a line-up of the tactics we use, see the Raid Tactics category.