If you are just starting out all that matters is going in to the gym regularly and lifting some weight. 3x5, 5x5, or some complicated periodized program with a lot of accessories are all going to work.

That's why I recommend keeping it simple. Build the habit and build some strength. Once you've done that, you can get fancy if you find that you're really into it.

A better training plan gives you a chance of winning competition. Most of us wouldn't win no matter what plan we follow (at my age only drugs could make me a winner and those have side effects I don't want), we just want enough strength for general life and health. With those more modest goals 3x5, 5x5, or since something not as good still will get us there.

What are your goals?