After you have created your first book or course and verified your email address, you will see a number of author profile options here:
You can navigate to this page from anywhere on Leanpub by click in the menu at the top right, selecting "Account" at the top left of the menu box, and then selecting "Profile":
On that page you will see the various options we provide for setting up your author profile:
We highly recommend you upload a nice picture of yourself and add your social media information. This really helps sell books and courses!
After you add your information, make sure to click the "Save Settings" button at the bottom of the page.
Here's an example of what an author profile page looks like, after you set it up: