It's not a hopeless request, it's actually something which is worth asking about as formations are notoriously difficult to discuss. Dan's descriptions of formations in MCTB are very difficult to follow since he's had a lot of experience with this and has examined formations at a level which is difficult to fully understand so I think, and no disrespect to Daniel, that it's easy to get confused by this. I know 3rd & 4th Path yogis who say that they've got no idea what he's describing but I think much of this has to do with Daniel's technical approach and efforts to give as much detail as possible.
So, my (quite possibly incorrect) understanding and experience of formations is this: Formations contain all sensory information (at the six sense doors) of a single moment of experience. They're like the building blocks or basic templates of dualistic experience since they contain all sensation from space and time, to the breath in the body. They occur constantly but this dualistic perception sees a "break" between each formation which creates the sense that each moment is somehow seperate from the last. Basically, formations are what occur all the time and contain all potential sensations which you could possibly note. Examining them closer allowed me to experience a gestalt of the moment i.e. all sensation at once in a unified sense field.
I don't know if that's any clearer? It's the way I've come to understand it so don't take this as the absolute answer.
I suppose if the book is correct, I will progress along the track it outlines, or else wallow in the Dukkha Ñanas for the term of my natural life, and if I progress, I will find out for myself. But if that's the case, it would be good to know what's coming, so I know it when I see it.
If you're practicing well then you most certainly will not wallow in the dukkha ñanas! You'll encounter them again and again though until you hit stream entry, and then you'll hit them again, and again, and again 'cause it's just a natural part of the process so learn to negotiate these stages. There's a lot to learned in Dark Night, a lot of cleansing and purification which is painful and difficult sometimes but it's worth every second although this may not become clear for a while. Get y'er head (or your arse in this case!) down and note, note, note. Work on your concentration and note some more 'cause it's the only way to get through these ñana.
There's been some other stuff in MCTB up to this point which seems to be outside my experience, like the 40 Hz "vibrations." How the hell do you note stuff at 40 Hz?? Increase the time resolution another 50%, and you'd be noting individual frames of a television display! I must admit, I'm extremely skeptical, but I've only been trying this noting stuff since I started reading the book. Perhaps it'll become clearer with time. I maybe note three or four things a second. In any case, it's a very useful practice for breaking things up when attention collapses down on something like an emotional reaction, so it's a valuable practice, no matter what macho speed I end up reaching.
Been there, thought that and realized that, although commendable to be able to note at these speeds and something which will come with time, it sets up a really high marker for newcomers and could be rather off-putting. By the sounds of things, you're doing fine with 3-4 s.p.s., as long as your being accurate with the noting and consistent in practice. Personally I don't even try to count how many s.p.s. I'm noting anymore, it fluctuates as you go through the ñanas anyway and when you get to Equanimity it's more about a balance of concentration and gentler noting rather than going hell for leather, in my experience anyway.
The frequencies of vibration is another thing which I tend to avoid getting too caught up in, unless I'm specifically trying to identify the stage e.g. the really harsh and choppy vibration in Re-Observation. Vibrations will appear anyway, you'll be able to feel the difference between each stage after a while with practice so don't worry too much about this for the moment. Daniel's book is amazing and I rarely put it down for more than a day or two, but after a while you come to realize that this dude is a seriously skilled practitioner and he writes from this level which, to many, can seem incomprehensible without practice.
My only advice on this front would be, note as you are able to and don't get caught up in the content or processes of figuring stuff out during practice. What Daniel says in his book is totally spot on in my experience, and more importantly it sets incredibly high standards for yogis which, although possibly discouraging at first, become essential to good practice and keeps people striving. Others may disagree, I can only speak for myself.
Macho meditation will probably make quick progress but at the expense of integration of these insights into our lives which, regardless of attainments, we still need to be able to handle skillfully and compassionately. There's also a risk of burning yourself out with that which you'll pay for at some point, so go at your own pace and remember that there's no timescale for attaining enlightenment.
Hope that helped a bit.