Depending on the modality of your contact lenses, there are different recommendations for your lens care. If you are wearing daily lenses, simply put them on at the beginning of the day and throw them out at night. With the lenses meant to be worn longer than a single day, it's important to remove them with clean hands, and to rub the lenses with all your doctor recommended cleaning solution before placing them in brand new contact lens solution for storage each night.
Be sure to follow the specific instructions your local eye doctor has provided for you when you receive your contact lens prescription to ensure the best health of your eyes.