In the quick start guide, the screenshot in the section "Running the Carbon LDP workbench" shows the port 8080, when the instructions indicate the "localhost:8000"
This issue is pertinent to the website. I have moved this issue to the CarbonLDP/carbonldp-website project. You can track its progress here: CarbonLDP/carbonldp-website#415.
In the quick start guide, the screenshot in the section "Running the Carbon LDP workbench" shows the port 8080, when the instructions indicate the "localhost:8000"