If you search on the internet and type "weightlifting programs" you will encounter thousands of results.
If you start looking at them you simply get more confused than at the beginning of your search.
There are a lot of aspects to consider if you are searching weightlifting systems.
My intention here is to start narrowing your search so you can find exactly the most suitable weightlifting program for you.
Two basic keys for a start: level and goal.
Are you a beginner, a medium or advanced weightlifter? If you are a beginner, an advanced program will be just impossible to follow and will result in injuries.
If you are a medium or advanced weightlifter, then nothing useful will result from a beginners program.
So that would be the first consideration.
Do you want to loose weight or gain weight? Do you want to tone, define or develop your muscles? Do you want to gain volume or strength? Set your goals clearly before choosing a weightlifting system.
There are weightlifting effective programs designed for specific goals.
Allow me to enumerate them for you; this will help you to decide exactly what you are looking for:

• To increase endurance and muscle tone.
  These kinds of programs are suitable for athletes and different sports practitioners who want to achieve a better physical condition according their sport practices.
  
• To gain muscle size.
  Muscle mass development is the main goal of these programs.
  Bodybuilders belong to this group.
  
• To gain strength: Now it is not muscle mass growth the emphasis, but strength.
  

Athletes, footballers and swimmers take advantage of these sorts of weightlifting programs as a way to achieve a better performance.
Also, bodybuilders seek strength improvement to be able to lift heavier weights and perform high resistance exercises to make their muscles grow.

• Maintenance weightlifting programs: These are designed for people that do not intend to increase muscle size but to maintain them along time.
  
• Loose weight weightlifting programs are seeking by those who intend to loose weight and define or augment their muscles as well.
  
• Gain weight weightlifting programs: Suitable for people that want to gain weigh and muscle mass at the same time.
  That is also called clean weight as it refers to muscle weight instead of fat weight.
  

Therefore, not to obtain disappointing and upsetting results, you must make a clear decision of your own goals and then you will surely find weightlifting programs just for you!