The ABS Clearing House, managed by the CBD, has a great deal of helpful information, and can be found here. There is also information on the Nagoya Protocol and ABS on the Clearing House Mechanism of the CBD, here.
The European Commission has a web page giving background information and links to the legislation here.
The High Value Chemicals from Plants network has information and resources here
The Linnean Society has produced a briefing document (17 April 2017) on the Nagoya Protocol, available here.
The Society For The Preservation of Natural History Collections (SPHNC) has developed a WIKI on Access and Benefit-Sharing (Nagoya Protocol and the CBD). This can be found here. The SPHNC home page can be found here.
The Swiss Academy of Sciences has produced a variety of very helpful tools, including a new Best Practice Guide for Academic Research and an ABS Agreement toolkit, which are available here.