*This offer is valid for Apress books and eBooks and is redeemable on apress.com only. Titles affected by fixed book price laws, forthcoming titles and titles temporarily not available on apress.com are excluded from this promotion, as are reference works, handbooks, encyclopedias, subscriptions or bulk purchases. The currency in which your order will be invoiced depends on the billing address associated with the payment method used, not necessarily your home currency. Regional VAT/tax may apply. Promotional prices may change due to exchange rates. This offer is valid for individual customers only. Booksellers, book distributors, and institutions such as libraries and corporations please visit Apress Corporate Sales. This promotion does not work in combination with other discounts or gift cards. This offer is available only through August 20, 2021. If discount is not applied automatically, please use code BIGA21.