The book I read to research this post was Basics Of Photography by Irene Sheerow which is a very good book that I bought from kindle. This book is only around 30 pages so is quite short. This is a basic guide to photography and making money from your photos. There is also websites like twitter, flickr and instagram where you can display your work. It generally is best to specialize in one aspect of photography ie fashion. You can also display your work in a blog. There is a wide variety of types of cameras. Many use a camera phone for normal use like when out. When you are posing for photos women should keep hair away from their face and can sometimes play with it to get a nice effect. You can tilt the head slightly and have the subject slightly off the centre of the picture. Men can part there legs slightly and women can cross their ankles for full length shots. If you cross your arms it looks defensive. Men can put their weight on the front foot and women on the back foot. This gives men a more masculine appearance and women a more feminine one. This is a very interesting book I do recommend. I certainly enjoyed it and did learn a lot from it. A telephoto lens if used wrongly can decrease pixels in image and you should consider just coming in a bit closer if possible to get the subject.
