Here's a couple that I really like: http://www.thepetcenter.com/gen/pups.html http://www.essortment.com/in/Pets.Dogs.Health.Care/ http://www.drpethealth.com/dog-health/puppy-health.htm These are all very user friendly resources. For DVM's, the Merck is the gold standard, and it's link is http://www.merckvetmanual.com/mvm/index.jsp I hope this helps!
It sounds like an upper respiratory infection, or if its short lived she could have inhaled something. URI sometimes there will be a greenish discharge. But some only have clear discharge. The Vet has told me in the past that it may run its course or you may go on meds.