here you go mate, i suggest you take a read through the wild section on the forum a lot of your questions ahve been answered there and you will get some good information form some good people who have been doing it
you will get used to the feeling and get better at relaxing. after your body goes heavy focus on the HI not you body then always remember that you want to have a ld. Try and do it after you have been asleep for a while first 
best of luck keep me updated with your progress