You can buy the book:

• On Amazon
• On Amazon Kindle
• Bookshop
• Apple Books
• Smashwords
• IndieBound

Bulk/large quantity purchases:

• Bulk print books for your team by physical mail (you give a list of mailing addesses)
• Bulk digital editions for your team via email (kindle) (you put in a list of emails, it takes care of the rest)
• Bookshop
• Amazon allows large quantity orders (select max from book page, then increase quantity at checkout )