Excel Services Related Books in the Pipeline

Here are a few books being worked on about Excel Services:

https://www.amazon.com/Beginning-Excel-Services-Liviu-Asnash/dp/0470104899/sr=8-1/qid=1168539718/ref=sr_1_1/105-2258527-0791610?ie=UTF8&s=books

https://www.amazon.com/Professional-Excel-Services-Shahar-Prish/dp/0470104864/sr=1-1/qid=1168539759/ref=sr_1_1/105-2258527-0791610?ie=UTF8&s=books

And a book on Sharepoint that has a whole chapter dedicated to Excel Services:

https://blogs.msdn.com/edhild/pages/pro-sharepoint-solution-development-combining-net-sharepoint-and-office-2007.aspx

I've read a few of the DRAFT chapters in those books and they should be a big help if you're getting started with Excel Services!