There are so many different fresh veggies and fruits to try:

http://www.foodsubs.com/Greenckg.html#Chinese%20spinach

For Asian green veggies that you are unfamiliar, the simplest way to start off is to wash, cut and sautee in hot pan for a few min. in a bit of oil, a bit of water so pan doesn't burn and if you wish a small jot of soy for seasoning. And have the veggie on the side. Then later, you can hunt around for more "complex" recipes (which often are not..)

For some salads, try adding raw peeled and sliced daikon (or Chinese white radish). Doesn't taste as spicy as the raw red little radishes. Or even peeled and chopped fresh water chestnuts can be a great textural twist. (Canned water chestnuts taste watered down.)