xxchan commented on issue #4071:
URL: https://github.com/apache/arrow-rs/issues/4071#issuecomment-1576901007

   Thanks. The docs are indeed very helpful! However, my user journey is like: 
   
   Wow, there are so many sub-crates! And ... what on earth do they mean?
   
   <img width="1138" alt="image" 
src="https://github.com/apache/arrow-rs/assets/37948597/59a481de-13ea-4dc0-9b50-d0b48cb9c0db";>
   
   Well, let me go to arrow-buffer / arrow-data and check it. Oops, there 
aren't many useful infomation either.. What is "Buffer abstraction"?
   
   <img width="1141" alt="image" 
src="https://github.com/apache/arrow-rs/assets/37948597/d0fc1fb5-1e9e-45d9-ad74-7eec960349a5";>
   
   
   So it seems good doc exists, but are not **accessible** enough. 
   
   Ways to improve I can come up with now:
   - Better "introduction" section in crate-level docs.
     - root `arrow` crate can group sub-crates (e.g., 
low-level/high-level/compute kernal, like the arrow2's doc) and add more 
description, instead of simply enumerating them.
     - sub-crate may need some more explanations (at least mention that refer 
to some struct's doc for more details)
   - It seems high-level API (Array) explains low-level API (Buffer), but not 
the reverse. Maybe a backlink can be added to explain the relationship.


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