ESXi is the product to deploy, how? Those 2 books might help you with that.
In no particular order, I'll start with the first one. Dave Mishchenko the author of this book.
VMware ESXi is the easiest way to get started with virtualization — and it's free. It allows administrators to consolidate their applications onto fewer servers and start saving money through reduced hardware, power, cooling, and administration costs. VMware ESXi has been optimized and tested to run even their most resource-intensive applications and databases with minimal performance overhead. “VMware ESXi: Planning, Implementation, and Security” covers the key features critical to successfully planning for and implementing VMware's ESXi.
The book is perfect for current VMware VI3 and vSphere administrators who may be planning their migration to vSphere ESXi. These users may have some experience with ESXi but not yet have it deployed within their production environment. This book provides the
guidance to implement ESXi in their environment, ensuring a smooth transition from their current deployment of ESX.
About the Author.
Dave Mishchenko has been in the IT industry for 13 years and is currently a technical consultant with ProServeIT Corporation, a top-rated professional technology services company. He provides consulting services to ProServeIT's customers and focuses on network infrastructure and security, thin client computing, database tuning, server hardware, and virtualization.
Dave is actively involved in the VMware Community forums, where he is a user moderator and in particular focuses on VMware ESXi. Dave was awarded the vExpert status by VMware in 2009 and 2010. He is a coauthor of vSphere 4.0 Quick Start Guide: Shortcuts Down the Path of Virtualization.
The Second one.
It's a second edition, updated for the latest version of ESXi of VMware's hypervizor.
Are you a beginning administrator or advanced administrator? If you are, then this book is for you! Author Edward Haletky has done an outstanding job of writing a second edition of book that examines Vmware ESX and ESXi versions 3.5x and 4.x.
Haletky, begins by looking at concept coverage. He also covers hypervisor, driver, installation, VM, licensing and management differences. The author continues by showing you how to plan your installation, providing the 20 or so steps required for installation, with 
only one of these steps being the actual installation procedure. Then, he discusses the software that is needed to install that aids in the auditing and monitoring of ESX. Next, he discusses the positive and negative things about NAS and SAN; as well as, the best practices for use, support, and configuration. The author also discusses the networking possibilities within ESX and the requirements placed on the external environment if any. He continues by delving into configuration and the use of interfaces. Then, the author goes into the creation, modification and management of your virtual machines. Next, he shows you the best practices for the application of all the ESX clustering techniques technologies and how they enhance your virtual environment. Finally, the author presents several real-world examples around backup and DR; including the use of redundant systems; how this is affected by ESX and VM clusters; the use of network storage; and, some helpful scripts to make it all work.
This most excellent book takes a look at the best practices for ESX and ESXi that can also be applied in general to the other tools available in the Virtual Infrastructure family inside and outside of VMware. Perhaps more importantly, the book provides real-world examples wherever possible and does not limit the discussions to virtualization tools developed by Quest, Veeam, HyTrust, and other third parties.
