There are no real requirements save whatever you are writing with and a book you are going to not read.
Step 1: In Class
The first way to be success without reading is to pay attention in class. I know this may seem silly, but you can actually learn nearly everything you need to know about a book just by listening and pretending to be interested in the in class discussions. If you feel like there is something you haven't yet picked up, goad your teacher into discussing it. This can be done simply by asking the teacher waht THEIR thoguhts on the section was, or stating that you don't really feel like you grip the section.
Step 2: Out of Class.
Step 3: The Improntu forwarning.
Many times The teacher will give warnings and hints as to what the improntu will be about, and knowing these give you the utmost advantage. This will allow you to focus the gathering of knowledge to a particular topic, thus allowing you to gain the facts you need, without those useless other things that may only confuse the reader.