I'm also an adult learner. I started with the lessons here on this site, which are very good, along with the drills. People recommended Smithy's Opening Fundamentals, which is a free course on Chessable. I'm only part-way through that, but it's very clearly presented. I also just purchased Yasser Seirawan's Winning Chess Strategies and Winning Chess Tactics on Chessable. He's delightful.
Yasser's Winning Chess series is excellent overall, and perfect for someone looking to get out of the beginner "hope chess" phase. Also, just this week I discovered that Yasser made some videos covering his Five Elements method. They are on YouTube in the Chess Brah channel.
Hey GoS, I appreciate the offer, but shipping from the Phil~ I imagine would be expensive to Canada for the series.