There are as many ways to train as there are trainers.
Most of them aim to teach the most effective muscle building and body building technique possible.
Regardless, there are some tips that will remain true all the time and help you make your workouts more productive:

• Eat well, not junk food and empty calories, and drink a lot of water.
  The best diet for body building is still a hotly debated subject, so I won't go in details here, but find one that works for your body and stick to it.
  It should be a pleasure to eat well, not a chore, so make sure to have some little treats and rewards to help you stick with it.
  
• Make sure you do a proper warm up before a training session with stretches and cardiovascular exercises.
  It will help your body and mind get into the right state for more intensive training and make sure you won't get injured.
  Also, your training will be more effective if you've warmed up correctly.
  
• Have a clear set of goals you want to achieve with your training.
  Knowing where you're going and what you want to do will help you choose what to do.
  Also, clear objectives will help you stay on track when comes the time to build your own training program, or when speaking to a trainer.
  
• Choose a good set of techniques and methods.
  You can choose to follow the techniques of a particular training guru, or choose the ones you know work well for you.
  But if you wish to follow a given method, follow it to the letter at first: most things are probably there for a reason, and trying the method as a whole will help you understand it better.
  

If you apply all these tips and train regularly and consistently, you will have success, regardless of the methods and techniques you use.
There are many ways to build great muscle, but for all of them you need to take proper care of your body and have clear goals to achieve.