Complex sentence: This began on 23 January with the re-launch of the main shopping website, the websites claim to make shopping with Argos more accessible, the careers website and the release of the Spring/Summer 2010 catalogue were also relaunched.
Split into simpler sentences: This began on 23 January, with the relaunch of the main shopping website, the websites claim to make shopping with Argos more accessible. The careers website, and the release of the Spring/Summer 2010 catalogue were also relaunched.