I love Faulkner, and I love this book, though it isn't my favorite. Honestly, I hated it the first time I read it. I "got" it the second time. I loved it the third time. It is confusing at first. It helps a little bit if you are familiar with Yoknapatawpha, but I think everyone is confused when they first read it. It has 4 different narrators for pete's sake! It is Benjy who is handicapped though, not Quentin. The first part is written in Benjy's voice, so it is especially erratic. I totally think the book is worth the effort, but it isn't for everyone.
The crazy thing about Faulkner is he doesn't really have a "style." Every book is written a little differently, so I find I often have to read them multiple times before I really get it.
ETA: I think the gender irregularity you are referring to has do do with the fact that there is a female Quentin and a male Quentin. Caddy named her daughter Quentin after their brother. The male Quentin is one of the narrators. Since Benjy's section jumps around so much chronologically sometimes he's talking about his brother and sometimes about his niece. Hope that helps!
loving her Minnesota