The Web Design Business Kit 2.0

Trying for a while now, to delve into web design freelancing with limited resources. I right in the middle of a progressing with a job for a client but I’m stuck - My real question is, I am in the middle of trying to order the product, “The Web Design Business Kit 2.0 - SitePoint Kits”, should I need to read through the book first, or can I use as a reference for this job I have?