i have 3 semesters left till my RN is finished, but i took my CNA in 2012. The best thing i learned from my amazing instructor was proper PPE's. she was strict and followed us around like a watch dog but she drilled sterile procedures into our head and her rendition has far surpassed what i have received in any of my RN clinicals! since her class i have yet to fling my wet fingers in a sink after washing them. "flinging your fingers flings germs!!" and she would then proceed to give you the mom look!! best class ever.