Astrology: Planetary retrogrades effects • English Conversation Questions

What is planetary retrograde in astrology?
How do planetary retrogrades affect us?
Which planets retrograde most frequently?
What is the difference between an inner planet retrograde and an outer planet retrograde?
Can retrograde planets have positive effects?
How can one prepare for a retrograde period?
What are the common misconceptions about planetary retrogrades?
What are the effects of Mercury retrograde?
What are the effects of Venus retrograde?
What are the effects of Mars retrograde?
What are the effects of Jupiter retrograde?