Well if we can't persuade you out of this highly specialized M.A. that was developed for very particular scenarios, and isn't the most effective outside of its illusory deception... hmm, lets see!?
If I were you, and fixated on this style and teaching myself. I would get several books on it, movies, etc. Read them, study them, internalize them. Then like in anything start w. the basics. Practice the fundamentals, the structure of Zui Quan. The drunken, liquid loose timing, to the movements. Then master the feel of that. Stretch yourself into the random extremes of the movement, feeling your body out. Studying where the energy moves, where your grounding is, where the power is, etc. From there; choose 1 Strike. Literally 1. And feel that out. Tie it into your drunken movements. Learn how to throw it most effectively, as well as when to throw it. Get the timing and feel down, until your body's cells naturally know it. Then stitch in another tactic.
Procede in that intuitive nature (since that will be your only guide), stitching in more and more tactics. Then from there, try out some combinations therof. Learn what combinations flow together, and where your openings are in between them.
Then I would even get slightly drunk, alone, for the sole purpose of bringing more authenticity and charisma into your routines. Feel it out... get to know it from a truer perspective to the form it was designed through and for.
From there I would utilize your friends. You mentioned their somewhat accomplished in Tae Kwon Do... use this. Spar w. them. Learn how this art that you've been practicing, and integrated into your body actually responds to real deal interaction. No need to go ape sh!t. Just feel it out. Build yourself into some good sparring through some time, etc. But first explore your body, and how it relates to someone through this art.
All the while when your doing this... start to finish. Try to visualize and mediate these patterns out. Model the masters you watch in the videos you get, in your mind. Play their roles out. Channel the mental frame of this art, feel it, breathe it, integrate it. Whats it trying to express? Find out by asking yourself this question, then mentally grabbing ahold of that feeling/essence and draw it in and through your body with your breathing. At first you'll feel the resistance of your mind through your body to this channeling. But the more you do it... you'll find out, and feel that this channel is expanding. And the feelings of this quality will be more and more integrated into who you are.
Grab ahold of this art as a thought, and keep drawing its quality through, with your concious intention and breath.
With all that said... when your nearing a sticking point and/or plateauing. Forget everything and become it. Your body and mind will have hooked onto this quality strong enough to just be led by it through feeling.
Then go back, and do it all over again... with the new depth of vision and awareness cultivated. Explore the art from start to finish, tasting the infinite subtleties that only reveal themselves to the trained eye.
(by no means am I a master in martial arts, this is just the totality of my experience translated into an offering of your request. Hope you gleamed some light)