I know you are all excited about Site Designer V3 (yea, a new name, the 'responsive is gone, short, sweet and to the point now). And, you should be, it's a crazy good app
The new Help Guide has been posted. You can find it at: https://tutorials.coffeecup.com/site-designer/
I have a couple of pointers for when you start diving in:
1. If you haven't yet, get some mileage with CSS Grid first. We have been posting a Guide to CSS Grid, a free app, instructional grid videos and step-by-step videos to help you get going. And yes, the cssgrid.cc site needs a (design) update, we are working on that!
Start a new project, do some experimenting, try to replicate things from the video, play around in a theme (or even study it).
The theme linked in the email is great for this and the gained knowledge will be a big help going forward AND with converting V2 projects to the new layout structure. Now, if you start converting please keep in mind that:
2 It is important to understand the very different concepts behind the old framework layouts and CSS Grid when you start converting. Please click the link, read (and clap please, I would be thankful and it will really help CoffeeCup to get the word out and keep improving our apps) before doing any conversion.
3 Suzanne wrote up instructions how to specifically do this within the app, if you understand the concept, this will be easy.
4 After that again, look at a theme to get a hang of the updated UI, workflow and especially, CSS Grid. The theme linked in the email is great for learning purposes (and it looks pretty darn good too ).
5 I would advise against mass importing components that might or might not be using rows and columns — instead my suggestion is to important them as needed, update them if needed and resave them over the old component. This way you are not mixing in 'old' layout components.
6 When updating, do it on a section by section basis (a section usually consists of one or two rows).
7 Start with easier sections to get a feel for this, do sections that contain menus and subgrids later.
As many of you already mentioned, CSS Grid is the future. Sometimes participating in that means investing a little time. Since all of you are already fluent with RSD, this learning should go fast though