ACTS & PROVE. Google this, watch Rod Giltaca on YouTube. Watch a few YouTube videos on "ACTS & PROVE"ing a double barrel, lever action, semi-auto, and a bolt action. If you can "ACTS & PROVE" and know what each letter stands for, you WILL pass.
I'm a total gun newb and my course had a couple of ladies in it that clearly never handled a firearm before and likely vote Liberal. They passed with 90%+ and some of the things they were doing in the course made me cringe, haha.
It really is a no brainer, a lot of common sense. Listen to your instructor, they will "nudge" you in the right direction most of the time. But that's literally it, study your ACTS & PROVE a few times and you will both be golden. I promise.
I also highly suggest signing up for an RPAL course ASAP before you apply. It makes way more sense, and is a lot more money to add it on in the future instead of just getting it done right off the bat. Even if you don't want a restricted gun right away, it wont add any length time to your application and is usually only an extra 6 hours of course time.
Good luck to both of you, but don't overthink it. Overthinking it is the #1 thing that will make you get a few things wrong. But it's common for someone who did literally no studying, grew up in the city, and got all of their info on guns from the CBC to pass with flying colors. The fact that you're even on this forum gives you a 1up on most people taking their course.
EDIT: Also, applying for an extra credit card or two well in advance will surely help your desires to have one gun of every action.. and then 2 of every action, and then 2 of every action from every production year..
I'm 2 weeks into having my RPAL and I've dropped near $10k already, prepare yourself!! Or have some restraint, because I sure don't.