I learned very young that skin care is a big deal.  The includes proper nutrition, avoiding too much sun, among other things
I need to know more about skin care as I age
Some people like to use cosmetics, exfolliation, and laser treatment.  
Is it true that drinking a lot of water is good for my skin?
I am sure it is.  Also, sun screen is a great thing for your skin
I never understood how sunscreen works is the lower number better or the higher number?
Sunscreen
Sunscreen, also known as sunblock, is a lotion, spray, gel, foam (such as an expanded foam lotion or whipped lotion), stick or other topical product that absorbs or reflects some of the sun's ultraviolet (UV) radiation and thus helps protect against sunburn. Diligent use of sunscreen can also slow or temporarily prevent the development of wrinkles, moles and sagging skin.
Depending on the mode of action, sunscreens can be classified into physical sunscreens (i.e., those that reflect the sunlight)
Skin care
Skin care is the range of practices that support skin integrity, enhance its appearance and relieve skin conditions. They can include nutrition, avoidance of excessive sun exposure and appropriate use of emollients. Practices that enhance appearance include the use of cosmetics, botulinum, exfoliation, fillers, laser resurfacing, microdermabrasion, peels, retinol therapy. Skin care is a routine daily procedure in many settings, such as skin that is either too dry or too moist, and prevention of dermatitis and prevention of skin injuries.
Skin