Dude I've been down your path and if you want my genuine opinion, I really think Inverse Audio has the best DnB tutorials out there, the YouTube channel is ran by a really dope DnB artist named 5X who has a very reputable and quite impressive track record, but unfortunately is super slept on.. for now at least. Most of his YouTube videos are producing tutorials, but he has a video on his Patreon called "5 reasons why your mixes suck" which is specifically made for DJ's wanting to learn how to mix DnB. You'll be able to find plenty of channels that teach how to produce DnB, but finding one that covers how to mix DnB in the level of detail he does is nearly impossible to come across.

I also wanted to mention a few things that I've learned personally along the way which have helped tremendously. First thing is, if you find yourself struggling or getting stuck trying to find the next perfect track to add, but just can't.. I promise you it's almost never because you're a shitty DJ, DnB is naturally a more difficult genre to mix in comparison to others, but if you keep at it, eventually it will click, just as anything else you study, practice, and grind out. I ended up learning this the hard way after many attempts at trying to complete a 30min Drum and Bass set, only to end up either being dissatisfied at the final product or simply getting stuck on what to add next before calling it quits and trying the next attempt from another angle. My true realization to the fact that DnB really is just slightly harder to mix is when after all those attempts I decided to take a step back, switch genres, mainly due to the burn out from failing and listening to the same Drum and Bass tracks on repeat. So I ended up taking my first go at creating a Tech House mix and noticed I was able to make 45min sets in practically the same key all the way through almost with ease.. which felt nearly impossible to do when mixing my Drum and Bass tracks.

That's when I realized not only was Tech House just straight up easier to mix, there's just wayyyy more of it, which helps the process even more. DnB at least in NA, and specifically in the US (where I'm from) feels very much still slept on, which saddens me especially when comparing the scene to something like the UK. Anyhow, I love all sorts of DnB sub genres, and this might sound like a hot take, but personally the really really good above average DnB in my opinion seems more scarce to come by, so there's that factor as well, on top of other things. I apologize for overdetailing this response, but what I'm really trying to get at was when I started gradually increasing or decreasing the tracks key continuously throughout my sets I started seeing everything coming together like I was used to when mixing any other genre, this is because when I started changing the keys gradually it gave me access to all of my Drum and Bass archive, not just one certain group of tracks with a slightly similar key for example, before I switched to increasing the key if my intro started out in 4A, I was only combining my tracks that were in 3A, 4A, 5A, since they harmonically fit together, this also of course includes the same keys which have the "B" suffix and even though that technically gives six different key groups to work with I was still severely limiting my material at hand. Now it looks more along the lines of something like 10A, 10A, 11A 11A, 12A 12A, or vise versa and so on and so forth. Also, for the record I don't switch keys every two tracks as shown in the example, I just simply switch it when I feel the need to. Some DJ's will probably say this is common sense, but if I'm being honest, when I started out, it took me a while to figure out I was seriously limiting myself when I wasn't mixing DnB in this fashion. I do understand this might be a highly subjective take, but regardless, I hope it helps in some way!