Creating and maintaining a content marketing calendar can help you forge a path that will lead you to your destination. Personally, the biggest benefit of the calendar that I can see is keeping you motivated and keeping you going even when sometimes you feel clueless.
In this Slideshare presentation I have explained how you can create a content marketing calendar using a spreadsheet. You can also use Google calendar but it is not conducive to creating different roles and assigning different tasks to different columns. In fact the greatest benefit of using a spreadsheet is that you can create columns and rows and then organise them in whichever way suitable to you.