Bodybuilding is a sport of building muscle. Bigger and stronger is the name of the game. One of the great things about bodybuilding is that you can achieve great results with only very basic equipment and a few hours of training three to four times per week. The key to

building bigger and stronger muscles is to keep progressively adding more and more weight over time. Building bigger muscles is about consistent regular training, eating properly, getting plenty of rest, and lots of weight at low repetitions. 
As a starting any new exercise program, is important a first check with your physician before starting a bodybuilding program. In the beginning is important that you start slow and learn proper technique. Time and time again professional body builders have said that technique is one of most important aspects of getting a good workout. It might be helpful to schedule a session with a professional trainer in the beginning so you start on the right track. If this is not an option for you there are various instructional books on the subject of bodybuilding. Above all take the time to learn proper technique.
Lifting heavy weight damages muscle fibers. It is only when the muscles repair themselves that they grow larger and stronger. For this reason it is very important that each muscle group is given plenty of rest following each workout. This is why most body builders alternate muscle groups. For example, you might work on your back on Monday, your legs on Tuesday, your chest on Wednesday, and your arms on Friday.Most successful body builders will recommend that you not work a particular musclegroup more than twice per week.The question may come up of whether it is best to use weight machines or free weights. The general consensus is that free weights are your best option forincreasing muscle mass. Machines are typically used for isolating muscles and

this is something that only professional body builders need to do before contest.
The following are some basic exercises for the major muscle groups.

Chest
1. Flat Bench Press
2. Dips
3. Incline Bench Press
Legs
1. Squats
2. Straight Leg Dead Lifts
3. Leg Press
Back
1. Pull ups
2. Barbell Rows
3. Deadlifts
Biceps
1. Curls
2. Incline curls
Triceps
1. Lying Tricep Extensions
2. Close Grip Bench Press
Shoulders
1. Military Press.

Remember to increase muscle size you will need to progressively increase poundage. Be patient. Overworking your muscles can actually have adverse effects. If you maintain a consistent regular workout routine coupled with proper nutrition and rest you will begin to see results in no time. Keep in mind it is common to see more obvious results initially and in overtime your gains will seem less apparent. This is because your body becomes used to your work out routine and in a sense knows what to expect. It is helpful to keep your body guessing by changing your workout routine on a regular basis.