This site will give a brief summary and images of the pests and diseases to look out for.It provides help for notifiable diseases. What to do for Notifiable Diseases
Some diseases require irradiation of equipment, and the beekeeper can request compensation.
The Ag Dept. sites in all states have very detailed information. The following link to the Ag in NSW has a series of 9 videos on Pests and Diseases as well as hard copy resources that will give you detailed information.
The Seasonal Tasks includes hive management procedures to carry out. Good Hive Management practices go a long way towards reducing and controlling pests and diseases in your hives.
Attending Field Days gives you the opportunity to listen to talks given by experienced beekeepers. This provides you with the opportunity to ask questions for your own needs. You can purchase various hive components, and get to know others with the same interest as you.