The beginning of Warriors, the New Prophecy

Here's something that will make you think... Why does the author of Warriors make the books in separate "series" of books?? That's something that will probably confuse everyone from the more intelligent, who would try and figure out a logical reason, to the 5-year-olds, who's wildly creative minds would search through tons of ideas that the intelligent might not even think about... unless you've started it by coming from the original series. I'll explain why in parts of my summary.

Brambleclaw was Firestar's apprentice until I dunno when (it probably happened in a period of time in between the two series). He was the son of Tigerstar, and looked almost exactly the same as him, but wasn't going to become a bloodthirsty devil like his father. Sure, he was ambitious, like his father, but his ambition was to be a great warrior. Firestar was assigned to mentor him. (Sometimes Brambleclaw gave Firestar the creeps because of how he resembled Tigerstar.)

Leafpaw is our ol' medicine cat Cinderpelt (say hi, Cinderpelt!)'s apprentice, who I believe was assigned and apprenticed recently. (I wouldn't know any of these following facts if it weren't for my cats of the clans book.) Leafpaw had the dream and destiny to become a medicine cat since birth, the opposite of her sister, Squirrelpaw, who's dream and destiny was to become a great warrior, like Brambleclaw. Both of them are heading in the right direction to make their dreams come true.

TIME OUT: Why aren't we following Firestar? This may be one of the reasons that there are separate series. Change. But why are we following 2 different characters at different times? IDK yet...

I'll answer my questions in my full post.