Some fo the Project Management activities done by any Project Manager is as follows(in no order):

  Form the Project team 
   Kick of the project with all thstakeholders(generally kick of consists of and objectives, success Criteria and other things explained well)
   Planning and preparing high level milestones
   Communications to the team and stakeholders
   Identify and manage risks
   Preparing Work Break Down Structure
   Assigning tasks to team from #4
   Track the tasks
   Ensure collobration with team and all the stakholders
   Stake holder management and support in executing the proejct
   Status reports to senior management team
   Ensure and check the project deliverables at each phase of the project  
   Regular meetings and resolving issues/risks
   Ensure On time, schedule deployment of  the project 
   Ensure Warranty and support
   Lessons Learnt meeting  etc..