Toxicology is a mammoth topic and comes up all the time. You need to master it to succeed. Consider it your nemesis.
General toxicology fact sheet Includes decontamination and antidote info
NMS vs EPSE vs SS vs MH fact sheet Guess the abbreviations!
Paracetamol OD fact sheet VITAL KNOWLEDGE
Tricyclic antidepressant OD fact sheet VITAL KNOWLEDGE
For envenomations: see environmental.