Trimming a dog's nails can be intimidating, especially after you've cut them too far back and gotten the kwik. This site has lots of explanation and pictures.
Doodles don't have a set cut or look and that can make it hard for your groomer to give you the look you want. Search the web for pictures of what you want your dog to look like and take it along to the groomer.
Many breeds with long, floppy ears like the Australian Labradoodles, are prone to ear infections. Prevention of ear infections is key and pretty simple: about every other week fill their ear canal with cleaning solution, massage gently, repeat on the other side, then let them shake it out. We do it along with bath time so everything is wet already anyway! If your dog struggles with ear infections, take a look at their diet!
Here's a recipe for homemade ear cleaning solution from Eden Valley Labradoodles using things you can pick up from any drug store:
6 oz isopropyl alcohol (rubbing alcohol) or witch hazel
4 tablespoons boric acid
16 drops Gentian Violet 1% solution
Mix all ingredients together and shake. Shake well before every application. The bottle from the store-bought solution is great to reuse and store your homemade solution.