hi.hope i put this question(s) in right spot?a) can i get a recommendation on a good starter chemistry book.im not formally schooled in chemistry im just smart enough to know,"" some"" things not to mix inside and i know when to run.lol.my goal is to establish a soild foundation of fundamentals,structure,processes and equiptment.my intrest of future research is cathinones class"".i know without a good foundation you have nothing to build upon for sure"". b)pertaining to a-pvp synthesis,exactly what temp or range defines chilled?is it even safe to chill mixture in conventional refrig?freezer?would unit have to be vapor tight ,do to thermostat and compressor relay arcing on make and break?is a ice bath method usuable?any answers greatly appreciated.