Hi Kathleen and welcome!
When you are in Webtrends Insight interface there is a button in the top right that looks like an arrow and is the "Share" button. Click it and choose Web Services (see screenshot below). Click on this and you will have the option to create an Excel ready url. These URLs are in what is called REST format which simply means that the url by itself is enough to specify the output... no code, plugin or anything else is needed.
Every time you view a different view in Webtrends, this url will change automatically (date ranges, reports and data viewed, etc.)
Use this url in Excel using the "From Web" data import option (Click "Data" and choose "From Web"). It will ask you to authenticate of course but that's about it. The data will just show up in Excel, live. Even better, you can sort/format/hide columns, etc. and when you refresh the data in Excel, it keeps all your formatting.
Once you feel you have this process down, the next stage to becoming a grand master of Webtrends DX is to look closer at the REST urls. You'll see there are elements you can change (like date ranges) and you can add filters, select specific rows of data, etc. These are all documented here on the Developer Network (if you are a Webtrends on-demand customer go here or if you are an on-premises customer go here).
Are you on-demand or on-premises?
If you are on-demand, we have a nice standalone REST url generator here:
Log in and you can click and select what you want and it will create the urls for you.
If you are on-premises don't worry, the urls are the exact same structure regardless of on-premises or on-demand. You'll have to read up and understand these REST urls (see my links) but honestly it's much easier than you think.