some basic info on pest and desease
http://www.overgrow.com/growfaq/t57
for example
GrowFAQ : Pests & disease control
Questions:
How can I get rid of these whiteflies?
Common insects - Id and control
Kunta's spider mite advice
Chimera's Journal on Spider Mites
How to make your own neem extract solution
Are there alternatives to chemical pesticides?
What biological controls are available for fungus gnats?
I've got spider mites, now what do I do?
How do I deter slugs and snails without using chemicals?
hope thats helps a few of yaw
peace