I (19m) recently became the full time guardian of my step sister (8f). I am clueless and I need some pointers or books that you can recommend to me.

So as the title says I recently became the full time guardian of my step sister after the death of her mom and my dad. I love her very much and I want her to be as comfortable as possible, and I want to be the best father figure I possibly can to her.I am getting her in therapy starting next week so she can properly process the death of our parents, I am trying my hardest to make sure she eats nutritious food and exercise enough each day, I make sure she does her homework, and I make sure that she goes to bed at a good time, but I'm not really sure what to do beyond that.I haven't had to do it yet, but I feel like I am going to struggle with setting up rules and routines to streamline her life so it doesn't totally fall apart. Punishment is a totally foreign concept to me, and I'd have no idea how to go about something like that, or if punishment for breaking rules is even considered a healthy thing these days.Are there any books I can read to improve my "parenting" skills? Are there any general life pro tips that I should be aware that took you ages to figure out?I'm trying my hardest, and I want to give my sister the best life possible, so anything helps. Thank you all in advance. via /r/Parenting http://bit.ly/2Pk72il