Amazon.com: SalesForce Guide eBook: Eric Kramer: Books. On Amazon.com, search for Eric Kramer. Note this is only available on Kindle at present. This book by my friend from Pinetop is a no-nonsense guide to configure a SalesForce application, with insights into passing the level-one programmer certification exam. Useful for people who want to understand cloud computing and tab into the growing job market for SalesForce programmers.