The following links are to ARRL information on RF safety. Some of the information, such as the descriptions about how to determine if a station is exempt from doing an evaluation, has been superseded by the recent changes to the FCC rules. See the Frequency Asked Questions link above for more information about the new rules.
The ARRL Handbook’s RF safety coverage as a PDF
The ARRL book, RF Exposure and You, is available for free download:
Four page index.
Here is a LINK to your very own RF Exposure calculator that will print your information so that you may include as part of your station information to remain in FCC compliance for reporting.