The Directorate-General for Justice of the European Commission has published detailed guidance on the Consumer Rights Directive (2011/83/EU).
The Directive was implemented into UK law by the Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013 (SI 2013/3134) which came into force on 13 June 2014.
The Commission Guidance is not legally binding, as interpretation of EU law sits within the CJEU's remit, but the document does provide useful interpretation on each article of the Directive.
The Guidance helpfully includes a table which identifies overlaps and/or differences between the information requirements under the Directive and those under the Services Directive (2006/123/EEC) and the E-Commerce Directive (2000/31/EC).
The guidance can be found here.