Each machine walkthrough eliminates your ability to earn points on that machine. This means if you view a machine walkthrough, you will be unable to gain points from this machine. Note also that machine walkthroughs are unavailable right after you start a machine. A machine walkthrough is enabled 1.5 hours after a machine is started. Also, you are only able to access one machine walkthrough in a 24 hour period. This is by design, as we encourage you to first try yourself - the ideal way to bolster a Try Harder mindset.
For information on accessing walkthroughs, please visit this Help Center article.