IBM has published many replays of IBM Connect 2014 sessions on socialbiz User Group. Below are some of the sessions related to app dev for IBM Connections.
AD101: Extending IBM SmartCloud Applications in 30 Minutes
AD206: Build Apps Rapidly by Leveraging Services from IBM Collaboration Solutions
AD301: What’s New on the IBM Social Business Toolkit Version 2.0
AD308: XPages in a Social World
BP207: Don’t Reinvent the Wheel – (Re)use Open Source Software From OpenNTF