General tick information including how to identify a tick:
Information on tick borne illnesses:
https://www.cdc.gov/ticks/tickbornediseases/index.html
If you need assistance getting your children tested for Lyme Disease, LymeAid 4 Kids through the Lyme Disease Association may be able to help.
https://lymediseaseassociation.org/category/grants/lymeaid-4-kids/