I understand you're looking for a guide to download a trial version of Photoshop CS6. However, I need to provide some important context:

If you need help accessing the official Adobe CC trial or installing one of the free alternatives, let me know your operating system and I can guide you further.

Adobe discontinued all CS6 products and their trial versions years ago (officially ending support in 2017). You cannot legally download a CS6 trial from Adobe or authorized resellers anymore.