Read this book if you want to understand how businesses and entrepreneurs market themselves successfully using today's tech. In all seriousness, if this is your field, you should learn about digital marketing from people who do it well.
I've seen many, many attempts at "Beginner's Guide to X." Most suck. This does not [...] It's totally free, no email captures, great layout, great content, and really well-written. If you need a resource for those learning PPC, this is the one.