How to keep food from sticking to the pan
Heat the pan beforehand and then add oil. This prevents food from sticking to the pan.
Food tends to stick to the pan if the pan is not heated enough before you start cooking.
How to keep it from rusting
To clean, do not use kitchen soap. Just scrub it with a natural brush and water (lukewarm is preferable).
After washing, please make sure to heat it again to let the water completely evaporate.
Also, it is better to wash the pan right after use instead of leaving with food on it because the salt and the acid from food could potentially damage the pan and create small holes or cause rusting.