Haven't gone to bed, but to be honest...
I'm not entirely sure if a communications walkthrough would benefit a player very much. An explanation on how to do each lesson can't hurt, and FES combat theory would go a long way. I can also see theory concerning scoring optimally in auditions helping too.
But communications? They don't actually help that much since strangely enough, you don't get appeals that fast anyway. You're left to do without for a very long time, perfect communications or not, and you'll get enough to work with to do what you need to do.
Surprisingly, FES combat theory hasn't evolved TOO much since im@s 2 (the changes that have happened are for the better, and I like the whole 'the AI isn't a cheating SoB bursting with an empty bar' angle I've seen so far) and scoring solo is a lot more straightforward (if you can throw a burst down 3 times, do so, if not don't try to use memory to speed things up, although using it to pad up your multipliers is nice. Also, remember to throw down your last burst at note 0, not note 1)
The one thing that will determine how well you progress is simply how well you can hold your combos or for a lack of a better term, your mechanical skill in regards with timing. For im@s L4U players, (or Project Diva ones) this will be a walk in the park. im@s 2 players should be okay too, if you ever played the insanely hard FESes or auditions.
I'll comment more as I plough through the game, I guess.
I'm not sure what information I should give as I blend my way through though. What sort of help do people need?