Events are the heart and soul of the SCA as you have already read in "The Complete Beginners Guide to Events". At local practices you get to learn and practice with others from the local area, but at events you get to put those skills to use with a much large and diverse group of people, and learn even more from them.
So you have found an event on the Kingdom Calendar that you would like to attend, but what do you need to take? Well that really depends on the type of event. There are three general types of events and you'll need different stuff to enjoy each, they are 1) Day Trip Events, 2) Weekend Camping Events, and 3) Wars / Longer Camping Events. Below are basic packing lists for each type of event.