Hi, there is one barely known guide which will perhaps offer what you're asking for, summary of Kant's transcendental idealism.
Because it is my own translation I didn't comment in your thread, since that could give the impression of public self-promotion.
There is also other information which might be useful.
The first edition is rarer but clearer, and shorter. Max Müller wrote “the first edition seems to me cut out of one block, the second always leaves on my mind the impression of patchwork”, and Schopenhauer said of the second edition “who can understand what contradicts itself?”
The work has basically three parts. Aesthetic, Analytic, Dialectic. The first part is very short. The second part is big, and extremely obscure. The third part is a refutation of old philosophy. For the second part, reading the parallel version of Prolegomena (Part 2: How is the science of nature possible) is very useful.
Very important: One of the reasons why Kant is hard to understand in English is because of a translation choice. I would recommend to read "perception" everywhere where the English translation says "intuition". More details. (So many people struggle because of this! It's unbelievable to see.)