Guys. You have it so good. Women's fashion is in constant flux - which is probably why we are always a little insane. But men's fashion is constant, reliable and adaptable. You have fundamentals that can be accessorized easily. What you need to know is minimal. It just takes a little practice.
Let's cap this adventure off with a quick lesson on how to wear all the garments we've covered. It's no good to have the ingredients if you can't bake the cake.
Buttoning the suit jacket:
Double-breasted: it is acceptable for this jacket to remain buttoned throughout the day.
Single-breasted: because of the cut and draping, it's more comfortable (and looks better) to keep the jacket buttoned when standing and unbuttoned when seated.
If you are wearing a coat that has two or more buttons, the bottom button is usually left undone. A double-breasted coat is the exception. But if you are unsure, a good rule of thumb is to keep the bottom undone.
And there you have it! Now! Go forth and prosper in your fine suits. I'll be waiting for you at the bar; you can buy me a drink - I like gin and tonics.