Fellow leo's, anyone know of any good free guides or pdf files or documents for police officers? Like drug identification or basic spanish etc. Anything really that would apply to police work. Ive been out of the academy and on the road with my first pd for about a month now and a few officers gave me a few files that I put on my flash drive and use on the mdt instead of having a bunch of paperwork in my patrol bag.. Just looking for some good guides or anything else that would be useful to me. Thanks in advance for any info or advice.