Hi linux new guy
That sounds like you are using the AppsBrowser, it's used to install applications (web browser, spreadsheet, etc.).
If you want to adjust your network settings click on the icon with the screwdriver on it and select Network.
Your network connection is working by the way, that's why AppBrowser showed you a list of files when you hit
connect. If you select one of them then the Go button will no longer be grayed out.
[EDIT]: Hitting Go will install the selected application.