APHA’s National Bee Unit has an excellent set of pdf booklets and fact sheets covering the range of pests and diseases relevant to honey bees, such as:
- Varroa
- Foulbrood
- Wax moth
- Wasps
- Small Hive Beetle
- Asian Hornet
- Viruses
They also offer advice on feeding, equipment cleaning, general hygiene and manipulations.
See their Advisory Leaflets, Training Manuals & Fact Sheets page for current versions.