Answer: You didn't mention which part of the country you're gardening in so I can only assume blueberries are hardy in your gardening region and will need protection this winter only because they are so young. In this case, wait until the weather turns cold, but before snow falls. You can set cylinders of chicken wire around each new plant and fill the cylinder with shredded leaves or compost. Or, you can prop pine boughs around each plant (teepee style), tying them together to keep harsh winds and snow from directly reaching your blueberry plants.
Strawberries in containers probably won't survive winter temperatures. You can remove them from the container, set them in a shallow trench near the foundation of your home, then cover them with straw or mulch. In the spring you can dig them up and replant them in your container.
Best wishes with your edible garden!
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