When you first get started in jiu-jitsu, the sudden intake of new (and strange) information can be a bit overwhelming. Your instructor may be teaching techniques that advanced students can easily grasp, but are still a bit too complex for your level of understanding.
This video from Quotes & Chokes makes things a bit simpler by emphasizing five important concepts that white belts in particular should pay attention to as they slowly absorb more techniques in the sport. Check it out!