1. Stick to Free Weights.
Even though the modern gyms are full of fancy and shiny machines, they will not help you build a solid foundation of muscle mass. Dumbbells and barbells are the best when it comes to building muscle and especially for a beginner.

2. Do Compound Movements.
While you might be tempted to try all the possible exercises you see on fitness magazines or websites, you should stick to the basic movements first. Exercises like the squat, the deadlift, the barbell bench press and the military shoulder press should not miss from your routine.