In his Zoom presentation this past week Jamie Ellis pointed to several sources for detailed information on Varroa Management. Jamie is a strong advocate of good management practices to protect hives from the number one threat to their health.
Jamie included two links that may be of interest to you. The first is to Insect Science publication. The information is thorough and in depth on all facets of Varroa.
The second link is to Honey Bee Health Coalition. This site posts excellent details regarding monitoring and treating your hives, including How To videos.