How can Business Class or First Class bonuses help me to reach Silver, Gold, or Platinum status more quickly?

Class bonuses when flying Emirates are 75% for Business Class and 150% for First Class; this applies to both Tier Miles and Skywards Miles. The percentage is calculated from the base miles earned on the ticket you purchased.

How can First Class and Business Class bonuses help me to reach Silver or Gold status more quickly?

Can I use my Skywards Miles to purchase Silver, Gold, or Platinum membership?

How can Business Class or First Class bonuses help me to reach Silver, Gold, or Platinum status more quickly?