Nah simon's isn't helpful for most drugs. If you wanted to buy from amazon and be set for most drugs I'd grab these 4

https://www.amazon.com/Elevation-Chemicals-Ehrlichs-Compound-Identification/dp/B00UF463NY/ref=sr_1_1?ie=UTF8&qid=1505162122&sr=8-1&keywords=ehrlich

https://www.amazon.com/Marquis-Mandelin-Reagents-Identification-Reaction/dp/B00TY3OO60/ref=sr_1_1?ie=UTF8&qid=1505162114&sr=8-1&keywords=mandolin+test+kit

skip ehrlich if you don't use psychedelics.

You're gonna want the Ehrlich reagent. You can get it for $15 on Amazon here.