Not all free PDFs or blogs are created equal. The ENCOR v8 update changed specific protocols and methodologies. When you find a free lab manual, check for these "Red Flags":

The search term "CCNP Enterprise Core Networking ENCOR v8 Lab Manual free" usually leads to two outcomes: illegal downloads (risky for viruses and ethics) or dead ends. Because Cisco updates its curriculum (v8 is the current major version), official printed manuals are rarely free.

A powerful emulation platform that is very popular for CCNP/CCIE studies.