I thought to do a little research on this and bring the useful books (ebooks) which are free.
What are kindle books: Kindle books are type of ebooks which can be read in Kindle fire or other similar devices. If you do not have kindle device, do not worry, still you can read this book. If you have an android phone/ mobile device or tablet, you can simply download it from google play store
please download from following link
You may download kindle for ipad from following link
You may download kindle for PC from following link:
You may download kindle for Mac from following link:
Now let us see the Kindle free ebooks on communication :