Inkscape is a very powerful drawing package, however it does not have the most intuitive interface. This book is a great manual and reference for everything you would like to do in Inkscape an much more.
I bought the kindle version and my one complaint is that you cannot view kindle books on Linux - the operating system that Inkscape was originally built for - unless you are online. Can anyone say irony? You can read it on android which is ... Linux derived! Sort it out Amazon.
If you really want to know about this series there are many reviews on the internet and one more isn't really going to make much difference but this series has it all. It will keep you engaged and entertained.
Looks like a great idea, but you are asking for trouble if you use this. It gets very hot and spontaneously discharges. I used it for some months on my S2 and in the end had to go back to my phone provider to get the back cover and battery replaced - which they kindly did for free.