Any good first aid course will give you information on what you want/need to take as a first aid kit. The first aid course should last a minimum of 2 days, less than that and you don't have the time to get enough information.
The pdf books are good .. you won't have time to read them at first attendance for a serious thing, if the retrieval takes more that, say, 40 minutes then you may well have time to check for better treatments. Non serious things maybe best treated by the patent where the patent reads the section of the book.
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