1. ToDoMARC : the complete ROADMAP, and where we are…
2. WhatIsMarc : explains what is MARC
3. MarcDBStructure : almost uptodate. Some indexes have been added, and a field or 2
4. MarcKohaMap : how we map koha old-db fields to USMARC subfields.

not updtodate, but useful :

1. MarcOperation : how we will manage the differents MARC normas in koha.

completly out of date :

1. CataloguingAPI : see Biblio.pm instead (lot of comments at the beginning)
2. WalktroughToMarc : see ToDoMARC instead