I don't believe there is such a thing as Bulk Extract for Marketo emails and Campaigns (although you can bulk extract Leads and Activities: http://developers.marketo.com/rest-api/bulk-extract/ ).
You can, however, export individual emails as HTML:
Can you give a little more detail about what you want to do as there may be a different way to achieve what you want.
Basically what I would like to have is all of my marketo leads exported to a workbook / spreadsheets and all of my email content and campaign info exported to a word doc. I do not a developer background at all. I am purely marketing, e.g. content creation, campaign deployment, social media, so the wide world of coding is a bit over my head. I appreciate you help on this!
That is not an easy task...
We offer it as a consulting engagement, using the Bulk API, which won't hit your API calls limits...
Contact me if interested...