3nps Fretboard Visualization: Finding intervals and notes on the guitar neck
 Here are a useful set of exercises to Visualize the guitar fretboard and build a holistic view of each position on the neck.  The videos that can be used in each exercise are linked below.  

Major Key Intervals: 1 second per tick
https://youtu.be/IGVTWYGVQ2M  

Major Key Intervals: 2 seconds per tick
https://youtu.be/ALbk2SQckCc