I think one of the most important things to consider when you want to train is the routine you are going to use. My wife buys me the odd Muscle and Fitness magazine as I find some of the articles very interesting. I can see how confusing it will be for a beginner who is unsure of what type of training they need to do. Most of the routines in these magazines are for people who are quite advanced in bodybuilding. The beginner needs to find out information about basic simple exercises. Once you have learned these and you have built a great foundation you can move on and incorporate the wonderful routines you find in the various magazines.
Most people will never need to move past using simple basic exercises as you can build an amazing body doing simple flat bench press, shoulder press, lat pull downs, triceps push downs and bicep curls. For legs you must do some normal squats, good mornings and calf raises. Abs needs any of the abdominal exercises and I think the best are crunches with some leg raises.
Work light when you are not used to training. I would suggest doing about 5 sets of 12 reps. Get the movement right. Never cheat with the exercises and always do them strictly so your form is as perfect as you can make them. Most people lose form when they try to go too heavy and then cheat with the reps.
Try to allow about 48 hours rest between working the same muscle again. I love a 6 day split and work out as follows.
Mon/Thurs - Chest, Triceps and Biceps
Tue/Fri - Back, shoulders and Abs
Wed/Sat - Legs (Quads, Hamstrings, Calves)
If you are wanting to burn fat you can do some aerobics every day for about 20/30 minutes provided it is quite intense.