Internet Retailer Top 500 Guide (Recommend Resource)
If you are looking to go into business online, or are trying to improve your online businesses take a look at the Internet Retailer Top 500 Guide. This guide is an invaluable resource that ranks the top 500 ecommerce retailers each year. You get all the information you need to understand trends, best practices, and what all the big players are doing in the online market.
Pros:

great overview of who is doing what
good information about

Trump University Marketing 101 (Recommended Resource)
As introduction to marketing goes Trump University Marketing 101 is hard to beat. It gets to the brass of what you need to know and do to market your company. A pure read for anyone who wants to get into marketing theory, with just enough practical examples to keep the reader intrigued.
Pros:

Easy to read
Provides links to resources with worksheets and exercises
Covers most of the basics of marketing theory

Cons:

More theory

Guerrilla Marketing (Recommended Resource)
When the economy turns, and tactics are not pulling in the returns you are used to, it may be time to pull out the Guerilla? Guerilla Marketing, 4th edition is a business gem, full of no nonsense, to the point marketing ideas. Sure to spark conversation, planning, and most important action toward profits.
Pros:

To the point information
Easy to comprehend and implement ideas
Tactically sound (useful and practical )

Cons:

Not a complete strategic resource and thusly a business should use this book as part of a more