Complex sentence: Starting in 2015, the Georgetown Law Library began publishing TeachingLaw.com and hosted it on an independent website with the goal of providing an "affordable coursebook" to students.
Split into simpler sentences: Starting in 2015, the Georgetown Law Library began publishing TeachingLaw.com and hosted it on an independent website. One goal of publishing TeachingLaw.com through the Georgetown Law Library rather than a commercial publisher was to provide an "affordable coursebook" to students.