Cannot find amazing Buddhism resource with a sequence of instructions/guidance by level I've previously come across an incredible Buddhism resource that has escaped me. It was a website with a non-modern design, plenty of sub pages that were formed in a sequence in terms of how to study buddhism.
In particular:

there were different &quot;levels&quot; at which different techniques were appropriate and articles were split by the stages/levels
for each of these levels there were a lot of comparisons (e.g., what type of problem/need you can remove at that level, what meditation is applicable at level, the Truths, the Paths)
it was illustrated with quotes and pictures from the masters and written in Buddhist language, not a beginner-friendly wikiHow-like style
it was quite an extensive resource

The closest comparison I've found is the Basic Buddhism Guide on Buddhanet , but was I'm looking for was a less modern website, with more pictures and written in a more traditional style.
Just a shot in the dark as I am not sure how well it matches your description, but could it be this? https://studybuddhism.com/

That site used to have an older version that was decidedly less modern and had the feeling of a much older website, but it has been updated recently.