These machines provide varying resistance levels for the arms and legs, as well as incline adjustments. However, they don't require applications of wax and tend to hold better skiing uphill. Made of leather or synthetic materials, which are specially made to fit cross-country skis. Dress warmly, but don't overdo it. Layer clothes, starting with a cotton base that will absorb sweat and ending with a warm outer shell that allows heat exchange.
Shaded glasses are a good idea for avoiding sun glare.
Also look for an adjustable hip pad, which will allow you to find a comfortable position on the machine. Insist on a good fit. Wear loose, comfortable clothing that will absorb sweat and allow unrestricted movement. To learn the movements, seek the advice of a qualified instructor. With outdoor skiing, it helps to follow an experienced skier and imitate his or her form.