I'm a 20 year old student who is tempted to give up his path in academia to become a carpenter. Help?

Right now I'm completing my BAH Geography, and I hope to also get my GIS certificate to open up more employment opportunities. I guess right now my long-term plan is to get my Masters, and then maybe onto PHD, and then after that teaching? Or something? GIS work seems horribly dull, and although I'm fascinated by my area of study, I don't know if I'm cut out to be an academic. Although I'm capable of pulling A's on a consistent basis, I (like many) am prone to procrastination, and generally not giving a shit about classes that I enjoy less.

Ever since high school I've always thought that I would do well in the trades. Whenever I have a chance to work with my hands I'm always amazed at how much I enjoy it. I've helped my dad with random household construction shit over the years, and spent a bit of time on a jobsite, and that's honestly been the most fulfilling work I've done. Both my grandfathers were farmers who were/are quite handy, they've both built their own houses from start to finish, maintained farm equipment and machinery, done cabinetry, wood turning, etc etc...

So all signs point to skilled trades, particularly carpentry, as a good fit for me. The problem, however, is that I haven't even taken grade 9 shop class, and basically don't have any base knowledge besides really basic shit like some power tool operation. My question to you, reddit, is is there any way to go about learning carpentry from square 1, starting in my early 20s? Even if I go for it and decide that its not what I want to do with my life I'll still have my BAH and GIS certificate, so I'd really like to hear suggestions. I'm also in Canada, if that affects your response.

TL;DR 20 year old Canadian university student wants to learn carpentry starting from square 1. No personal experience but comes from a family of people who do. Wat do?