Marketo's Engagement Programs make it easy to nurture customers and prospects. Once you have created your engagement program there are 3 things you need to do:
1.) Create a Smart Campaign using the Add to Engagement Program flow step to add people to the program:
2.) Activate the content in your program by navigating to the Streams tab, click the gear, and select Activate all content:
3.) Change the Program Status to on:
Magic! You are done!