I am only listing the important choices that earn you general points, or unlock the Love Interests. Every other choice is pretty much up to you.

"Take the box to the back yard." - Danny
OR
"Take the bags to the bin out front." - Elliot

"Ignore him."

"Try to talk to Elliot." - Elliot (if you chose the back yard)
OR
"Try to talk to Danny." - Danny (if you chose the front yard)

Create Save

"Take the seat at the front." - Marc
OR
"Take the seat at the back." - William

"Dive into the sea of students and hope for the best." - Corvin

"Accept Ewan's offer." - Ewan

You can have as few as 2 choices, or as many as 5, but never all 6. Library options are as follows:

"Faeries" - Ewan's Route - I personally recommend this one for last
"Human Psychics" - William's Route
"Natural born Vampires" - Marc's Route
"Infected Vampires" - Elliot's Route
"Werewolves" - Danny's Route
"Wizards and Witches" – Corvin's Route

As with the above, I will only list the options required to get you the bad ending. Everything else will be up to you.

"Try again."
"Go introduce yourself to the teacher."
"Wait until the hall clears a bit, then pick it up."
"Text Ally instead." OR "Try to text your mom."
"Follow the shadow."