If you want to get an overview about various tools which can support your content curation process I suggest the following slideshare presentation of Robin Good, given at the international journalism festival 2015 in Perugia.
Robin Good runs the excellent http://www.masternewmedia.org/ Website, which covers various topics around content curation and communication.
The presentation will showcase a short selection of some useful tools, which he discovered during his work. This includes tools for
- Learning paths & courses
- Websites collections
- News radars
- Video compilations
- Newsletter emails
- Visual Catalogs
- Directories of tools or resources
- Quotes Collection