Unlike clay, ceramic pots are usually glazed and often cause water problems because they do not breathe. With proper watering, ceramic pots can be suitable containers for your plants. Although wooden containers are not available in as many shapes and sizes, they work well with indoor plants. The rule of thumb when potting a plant is to choose a container 2 inches larger than the root mass. Using a pot that is much bigger leads to over-watering.
Used containers can harbor diseases.
If you want to reuse a pot, just make sure it is clean. Scrubbing them with a stiff brush and soap is usually enough, but you can also send them through the dishwasher, if appropriate. While this is possible, it is much more difficult to keep the plant properly watered. Unless you have lots of experience, stick with pots that have drainage holes. You need to buy the best potting soil available.