Supply the necessary required fields. Fill the "Website" field with any site address. Accept the developer agreement.
Submit the form.
Put in "Callback URL" field
"Allow this application to be used to Sign in with Twitter".
Press "Create your Twitter application".
Go to "Permissions" and set access type "Read and Write".
You may need to attach your telephone number to your twitter account for this. You can use one number for several accounts by deleting it from one
and registering to another.
Copy Consumer Key (API Key), Consumer Secret (API Secret) to the same fields at get-tweeets.info.