Beginner's Running Plan - This plan pretty much details what I would advise people who find it difficult to start running after a long "off-period". Do short intervals or walking and running or jogging.
This is a fun one I did it today. Initially, my goal was to complete the circuit 4 times, but I was able to get 2 rounds in! Pretty good for someone who is coming off an injury that basically had me doing none of these cool moves for 3 weeks!