Help me grow my hair

[Bibiboo]

How can I make my hair more inclined to grow nice and long? It's fine, flyaway and prone to split ends. Also very, very greasy! I try not to brush it too much or use tight bands to tie it back, but to no avail. It always looks scraggy once it reaches my shoulders - help me in this trivial matter pelase!

What style have got it in bibiboo?

My sister has very fine hair too, and she has it in a layered just-above-shoulder-length style. The layering gives her hair more body.

I've got a "choppy bob", thinking it would give my hair a thicker effect, it just makes my face look fat(ter). I can get it to my shoulders and it looks okayish for a while, and while I was pg it was down almost to my bra strap and looked lovely, but inbetween those two it's unbearably scraggy, takes yonks to grow and has to be washed every day it's so greasy I cant even tie it back.