Until you connect a custom domain, your website address is https://www.podpage.com/your-show-name. You can see (and change) the last part of that address in your dashboard under Podcast Info → Name / Description.
The easiest way to open your site is the Open Website button in the top-right corner of most dashboard pages — handy for checking changes you've just made.
Once your site looks the way you want, connecting a custom domain or subdomain can boost your SEO, look more professional, and make your address easier to remember and share. You can buy a domain (typically around $20/year) from registrars like Namecheap, Hover, or GoDaddy — then follow How do I connect my domain name to my Podpage? to add it.