There are numerous english speaking ski schools that provide excellent tuition for all ages, starting from age 3. The Magic Carpet provides an excellent safe environment for young skiiers to practice and is conveniently located close to the main restaurant area.
Further details of lessons and prices can be found at Ski School Kreischberg.
There are two main places to hire equipment. Intersport provide 1st class facilities at the bottom of the slopes with maintenance facilites on the slopes.
For the more traditional experience, try Sport Suli. Here you will find a warm fire, schnapps and lower prices.
Save yourself the hassel of lugging ski equipment around and rent a Ski Box from Intersport at the bottom of the slopes.