Mercury in Retrograde

I was given some homework: Why is Mercury Retrograde important? This is for you to research if you do not know the answer. Important things to find out.....What does Mercury rule. If it is retrograde what does this mean? How would that affect things?

And this is what I found out: Mercury in retrograde is important because Mercury rules communication. And when Mercury is in retrograde things seem to get messed up. Communication isn't what it should be and things just don't go the way they should. Its good to know this so that you can do other things. Meditate, write poetry, read, listen to music...

I found this on an internet site:
Void-Of-Course Moons

Never heard of the void of course moon? Knowing when it comes up will help you avoid bad decisionmaking and wasted effort. Hats off to Al H. Morrison who realized that void of course moons impacted the rhythms of everyday living and to Debbi Kempton-Smith who detailed Morrison’s work in her 1982 book, Secrets From a Stargazers Notebook . We become more fallible during a void of course moon, which occurs every few days or so and lasts for a few minutes to several hours. Void of course moons occur when the moon finishes its last major aspect in a particular sign before it moves to the next sign.

Avoid doing anything important, such as a job interview or granting someone a loan, during a void of course moon. Void of course moons disrupt communication. Anything we do could require some adjustment later.
An example - In every presidential election from 1900 to 1972, one of the two major party candidates was nominated when the moon was void of course. Every one of those particular candidates lost!

Use the time of the void of course moon to rejuvenate your spirituality. Meditate, read a book, veg out and feed your soul. Hang up the "Gone Fishing" sign when the moon is void of course. When the moon fully enters the next sign, get back to work!