3 weeks ago I discovered the amazing JFZ channel and started binging its videos with a passion. Then after finishing every single video I thought I owed it to myself to buy the subscription and keep studying.
The one thing that's been concerning me is that every lesson teaches a bunch of vocabulary, and since I watched the videos I skipped to course 3 here in the yesjapan website.
I'm having a hard time finding a good approach at learning all the vocabulary that I've missed because I haven't done courses 1&2. Has anything worked for you all that helps learn a bunch of new words quick?
Yes, you should go back and learn it. Since you're asking, here's my thoughts. Go back and review the first two lessons to learn all the vocabulary and review/practice the grammar while you're there in case you missed anything. The videos were never meant to replace the lessons.
I like to make flashcards in Anki for vocabulary, grammar, and sentence examples, which I use every day, but also like to make paper flashcards of vocabulary words for extra enforcement. I seriously love the way Anki spaces the cards based on my ratings of each one during a study session so the cards I know best are shown to me less frequently. I've learned and retained so much. My collection of paper flashcards cannot compare to the long range use I get from Anki but I still swear by the act of writing out the cards manually and having a few days of physically holding and viewing them. Good luck!
FYI: there is a lot of vocabulary to learn in the first two courses, much more than grammar. I found the grammar in books 1 and 2 to be fairly simple but vocabulary piled up to the point that when I finished book 2 I actually slowed down deliberately to spend some time reviewing and practicing conversation before advancing through book 3. My daily Anki review was pretty heavy so I couldn't imagine adding loads more vocabulary until I got it under control. Take your time. This isn't a race. Speeding through the lessons is worthless if you can't actually understand or use the language.