I fully agree. I wish more intro-level documentation had this kind of easy to follow and progressive level of detail. All too many things like this either dive

I fully agree. I wish more intro-level documentation had this kind of easy to follow and progressive level of detail. All too many things like this either dive straight into the deep end inundating you with superfluous details when all you want is a primer, or provide so little information as to be nearly useless. The writers on this did a great job.