The easiest way to share your link is to go to your profile, click on the top Settings wheel and click on Share. You will also see in your Settings, your unique Instantgo URL which you can copy by simply clicking on it.
Your unique Instantgo URL link is simply https://www.instantgo.com/username where "username" is your username. For example, a user with a username "johndoe" will have their unique URL link to be https://www.instantgo.com/johndoe
Every user on Instantgo has this unique link to easily share their profile with others. When someone click on this unique link, they will brought to your very own profile page where they will see information such as the rates you charge for your conversations.
Remember that the more you share your link around, the more likely it is for people to find and connect with you on Instantgo.