It's easy to get started using the API; we have sample code you can use, and if you prefer, we've even got some handy Web Frontends to help test out parts of the API.
You can find sample code for accessing the API on GitHub: github.com/whatismybrowser
We cover a number of popular software languages, giving examples to show how to connect to the API. We're working on sample code for more languages.
If you need to use Microsoft Excel to parse user agents, then please look at our spreadsheed to parse user agents. It will let you paste in user agents, send them to the API and then record the parse results.