There are going to be times, throughout the game where situations happen involving supernatural abilities. While, as players, you will more than likely know everything printed in the core book, it needs to be brought to the forefront that your character will not necessarily know. To use an example, the Presence discipline:
All characters would know of the discipline name, and that it can affect their emotions to one degree or another. However, only characters in possession of the discipline would know the exact effects of it, and how it can be circumvented...with a few exceptions, most noteworthy being Clan Tremere with the ritual Pavis of Foul Presence in effect.
It would be greatly appreciated if you roleplayed your character correctly during any period that they may be affected by a supernatural effect by following the laid down guidelines contained within the core rulebook. If you are in any doubt about how your character may be affected, please contact me and I will do my best to assist you.