You can only run Android apps on an Android tablet (not Windows apps).
There is an MS Office compatible suite pre-installed (Polaris Office) and you can use that to convert documents to PDF.
If an app supporting inking, you can write anywhere in that app. Otherwise you can take a screenshot and write on that screen by placing the screenshot in Samsung S Note.
There's an HDMI adapter but no VGA adapter. Wireless printing is supported if you buy an app to do so. It supports big name popular printers like HP printers.