https://en.wikipedia.org/wiki/The_Anarchist_Cookbook
That's legal in the US so a guide to internet piracy certainly would be.
If you want to be overly cautious you can write it as a guide to using the exact same process to download media that's already passed into the public domain. Nothing illegal about downloading things that aren't protected by copyright. That the same process can be used to download pirated media is just a coincidence.
I don't know anything about relevant laws in the EU, Czech Republic, or Germany.