To see and make changes to your account details, click on your name to go to your User Page, then click on the small white box with the horizontal bars, located to the right of the green "Create a New Post" button. This will bring up a drop-down list from which you can select Account, which will bring you to the page on which you can manage your profile. From here, you can edit information such as your e-mail address, password, and more.
If you would like to include links to your other social media pages (such as a youtube channel), you can paste those URLs into your profile. This will create icons beneath your name on your Loom Community user page that people can click on, which will redirect them to the respective website.