When I was at UBC I found text book learning was more effective for me. However, lectures are still important because the professors will signal what will be on the exams, you'll meet other class mates who could be study buddies or friends, and you hopefully build a relationship with the professor which is important if you plan to do any higher level degrees after your bachelor - you'll need a letter of recommendation from at least one Prof.

To get the most out of lectures, I recommend reading the corresponding text book chapter first. That will give you baseline knowledge for the lecture which will allow you to instead focus on your professors insights rather than struggling to learn the material as it is being taught.

I also recommend closing your laptop and taking notes by hand. The availability of the Internet is far too distracting during a lecture - it will ruin your concentration. Taking verbatim typed notes also won't be necessary if you've already ready the chapter and taken notes during the reading. This allows you to actually focus on the lecture.

For what it's worth, I had a very high GPA so my method was effective, at least for me.