All papers have been-reviewed. Our star is a very effective particle accelerator. Energies up to GeVs have been observed in Solar energetic particle events. These events are often associated with solar flares and/or Coronal Mass Ejections. Understanding how particles are accelerated in these phenomena has been an outstanding problem in space plasma physics for a long time. Part of the reason is its practical (e.g. Space weather) and fundamental (cosmic ray origin) importance. In this conference we review recent progresses on this problem, with a balance between observations, theories and numerical simulations. Specific topics include particle acceleration at flare site, turbulence properties of the solar wind, particle acceleration and transport in the inner heliosphere, particle acceleration at the termination shock and heliosheath, and particle acceleration at supernova remnant shocks.