The Big Conceptual Idea in the Central Dogma is about instructions for (generally) proteins: what form they take, how they're stored, how they're 'read out'. Focuses on concepts: interlocking pieces (bases) whose very structure causes 'partnering; how a structural toolkit (amino acids) is the foundation for diversity.
Info_Flow is a pair of self-guided tutorials; open, follow instructions.
Several of the pages offer a 'Real Deal' button giving a more technical/structural look.
The Big Idea here is not order of operations--it's what role the key polymers play and how their structures fit them to those roles. For the long version, here's my blog post