To search for specific accounts and follow them:
1. Go to the People Tab
2. Tap the search icon in the top left on iOS and bottom right on Android
3. Enter the username of the account you're looking for in the search bar
4. Tap the "+" icon to follow
Here are other ways you can find new accounts to follow under the People Tab:
1. Check the 'Trending' list for popular accounts.
2. Select 'Find my Friends' to connect your phone number to your account and upload your address book so you can see who you know on Periscope.
3. If you created your Periscope account with your Twitter account, you will see a list of people that you are ‘Following on Twitter’ but haven’t followed yet on Periscope. We don’t automatically import any of your Twitter followers or those you are following.