Thermite isn't dangerous unless you're clinically retarded.
napalm can be.
Id say the A-Cookbook was useful for me only to get a few ideas, then research the PROPER way to make some the explosives.
Its a cool read dont get me wrong, I just wouldnt reccomend using it as an authoritative source, it's similar to TOTSE, a remnant of days gone past when this information was actually hard to get. Nowadays... well thats just not a problem. If someone can't tell you how to synthesize RDX or similar within five minutes of googling, they shouldn't be allowed to try and make RDX lol