Cheers, glad you enjoyed it. Yeah, I'm using daz, and unintuitive as it seems, it's not the worst out there.

I'd say go and have a look at a bunch of tutorials, I think this youtuber "wpguru" was actually commissioned to do a whole series to get beginners up to speed, and skimming through the list, I thought there were some interesting topics there. But I think some of the more advanced ones require getting a DAZ+ subscription (still, if you plan to get serious with daz, it's decent value for money, especially if you pick up a year subscription at a steep discount during a sale).
Even so, there's a bit of a learning curve for sure, and there's not much to it other then getting to grips with it and starting to use it, and learn as you go. Tbh, more than 50% of daz skill seems to me to be how to troubleshoot when it invariable throws some issue your way, and in time, you'll get very good at that.
As to the styling, there's a bunch of products in the store that let you tweak all aspects of body and facial features, and I just took a week or two to futz with the hundreds of sliders you get with those, to make something I felt fit the bill. I think what I used was 200+ face morphs, body morphs, natural breasts, and I added in a dash of cartoonized to pull them right out of the bottom of the uncanny valley. But yeah, there's a whole lot of trying and do-overs involved.
I don't have any tutorials really. There's a few posts on Patreon/Subscribestar where I picked a component of the game, and went through the steps involved in creating it, but those hardly qualify as tutorials and don't contain a lot of actual details, they're more meant to be an interesting read.
One piece of advice I always give to anyone thinking to start, is to do something small you can throw away after you learned all you can from it, because the first project will be burdened with every rookie and not-so-rookie mistake you can pack into it. For me that was First Contact.
No worries, it won't be abandoned until I'm done telling the story I wanted to tell, I love these characters too much not to give them the closure they're owed.
Yeah, it'll probably have to endure the abandoned tag for a short spell, but so be it, and I'm not too worried about that. It's done when it's done.