Quite honestly, when I initially read your post, I was a bit confused – my fault, not yours. (I wasn’t sure if you were referring to something off the SCM site.) If you are talking about the ‘Planning Your Charlotte Mason Education’ versus the ‘All-Day Charlotte Mason Seminar’ which are both SCM’s, I’ll try to help.
The first mentioned above helps you plan from the whole picture, down to your day. (Kind of like a map of the world, down to your living room – if that makes sense. 😀 ) It gives you sample schedules, timetables, methods, and goals along with a clear explanation for each “step” (the steps are the bulk of this resource, of course). I would *highly* advise buying this – it’s been a huge help to me in planning our school year and thinking about the years beyond the next.
The seminar basically covers what you can find here on the SCM site already (CM methods for each subject). I found this to also be very helpful, but if you are debating on which ONE to purchase, my recommendation would be the ‘Planning Your Charlotte Mason Education’. Use the SCM site as a resource (as Sonya planned it to be) and you’ll feel more sure of how to use the CM methods. The seminar also has a final “session” that talks about ‘laying down the rails, but I personally recommend the ‘Laying Down the Rails’ book for your library. It is *excellent*!
If you are a visual person and can buy both (or all three), it certainly wouldn’t be a waste of money, but you can get by without the All-Day Seminar.
I hope this helps (if I’m even in line with your question). 😀