You can download the free 2014 edition of Layer 2 Ethernet by Christoph Jaggi (published by inside-IT.ch) for your devices.
The book is best
viewed on a tablet or computer.
Though you can tap them to expand to
full size, there are many graphics which may be difficult to read on
smaller devices, such as smartphones.
Go to the download page
For more about Christoph Jaggi,
visit www.uebermeister.com or send an email.