How do I get boos on my kindle - Tablets & eReaders

Hello, Reg -

Clarification: Are you asking how you can get books (not "boos"), meaning e-books, to read on your Kindle?

If so . . .

Kindle is an e-reader which is proprietary to Amazon - Amazon.com.

I have no idea where you reside - in what country. I am answering from the USA. Fixya.com receives questions from people worldwide.

For your Kindle, you will need to go to the Amazon website for where (country) you reside, then go to the Amazon department for Books, find e-books you wish to read, and order and pay for the Kindle version for those books.

Through the Kindle, owners can also access Amazon's Kindle store.

Read about other ways to obtain e-books to read on your Kindle here, including borrowing e-books from your public library to read on your Kindle:
https://www.amazon.com/gp/help/customer/display.html?nodeId=201252760

There is more information here:
https://www.amazon.com/kindle-dbs/fd/kcp

You may find this How Stuff Works multiple page article on "How the Amazon Kindle Works" instructive:
https://electronics.howstuffworks.com/gadgets/travel/amazon-kindle.htm

There are other options for e-books to read on a Kindle, but this information should be enough to get you started.

Best wishes.