Assuming Nami wallet is installed in the web browser. Assuming Nami is connected to an address with at least 100 ada on the Cardano preproduction network. Assuming the example code is already installed:
Open a Linux command line terminal session on your computer.
Change to the following directory: Your path will be differnt of course. /home/user/marlowe-starter-kit/06-cip30
Run the following command:
./run.sh.
After the server has started, paste the following into the address bar of your browser: http://127.0.0.1:3000/
Go here https://github.com/input-output-hk/marlowe-starter-kit
Switch to this branch using the button on the website. bwbush/CIP30
Look into the 06-cip30 directory on github website
Follow the directions to start the example dApp