Nearly all of my Shar knowledge is from BG I and II and I'm still in the dark...about most of what's happened pertinent to BG:III.
You might say I'm the perfect test subject for this.
I think the big issue is that Shar caused the spellplague by getting cyric to murder Mystra about 100 years before the game is set. The spellplague was a cataclysmic event that killed millions of people, destroyed cities, etc. Baldur's Gate wasn't effected much, but most of the rest of the world was.
Yup. This was Shar's machinations too, her attempt to destroy the Weave and replace it with her "Dark Weave."
