The most recent edition can be found at https://tille.xalasys.com/training/bash/. You should find the same version at https://tldp.org/LDP/Bash-Beginners-Guide/html/index.html.
This guide is available in print from Fultus.com.
Figure 1. Bash Guide for Beginners front cover