The Question and Answer section for All the Bright Places is a great resource to ask questions, find answers, and discuss the novel.
Finch was born on March 21st, thus, his Zodiac sign is Aries.
Time travel, at this point in technology, is not possible. I don't even think it is even scientifically possible knowing the laws of physics.
I can't provide you with ideas for your wall of thoughts, as mine would likely be far different from your own. Good things might include family or lasting memories. Reminders for me would be notes let me remember the things are that in...