Understanding The FCC Regulations for low power, Non- Licensed Transmitter

Hi Guys   I dont know if you know about this its the FCC OET BULLETIN 63 & 65  Lots of good informations these are pdf files.

1)  Fcc Regs for low power no licensed transmitter   www.fcc.gov/…/Documents/bulletins/oet63/oet63rev.pdf   

2)  Rf On Human Exposure   www.fcc.gov/…/Documents/bulletins/oet65/oet65.pdf