Have you checked out the Documentation tab in for the plugin? https://octobercms.com/plugin/taema-bandtourevents
I am not exactly sure how to help you. You will need to be a bit more specific. Did you run into some errors or you need help on how to install a plugin?
The steps should be the very similar to any other plugins:
- Install the plugin
- Use the EventList component on a page where you want to gigs to show up
- Add some gigs through the plugin's backend menu