It's natural for first years to enter UBC full of questions, and the folks at r/ubc are doing a hell of a job answering them. Here are a few of the most popular questions from their Housing and New-To-UBC megathreads. Keep in mind, they're still answering queries, so if you have one that isn't addressed in either of the threads, you can post it yourself.
Q: Does a larger room really make that much of a difference?
A: Yeah, a bit.
Q: What's the internet speed like in residence?
A: Awesome in the new houses, mediocre-bad in the old ones.
Q: Is it weird that I haven't gotten an acceptance letter yet?
A: You have a few days before you need to start worrying.
Q: What is the (underage) drinking life like at UBC?
A: Completely acceptable if you're not an idiot.
Q: Does a "discussion" class mean I'll have to actually discuss things?
A: Yep.
Q: Is it worth going to frosh?
A: If you like drinking and new people, sure.
Q: How hard is it to transfer into a different faculty?
A: Fairly straightforward, but you have to wait until next year.
Q: Can I bring a router to my dorm?
A: Yes, but an ethernet cord means faster internet.
Q: Which phone carrier is the best?
A: The major ones all have the same coverage and almost the same plans. You can probably find better deals at a smaller carrier that runs off the same towers.
Q: Will my food be okay in a shared fridge?
A: Probably.
Q: Can I store hunting rifles in my dorm?
A: No.
Head over to the threads for more: Housing, New-To-UBC. Hint: ctrl/cmd+F, then type a word that relates to your question to see if anyone has already asked it.