Add, Delete, Edit Forms
A list of webforms can be found in /admin/structure/webform
(see below):
Editing Forms
Editing a form can be done by clicking the "Build" button on the form's row in the webform list (under the "Operations" column, see photo above).

Alternatively, navigating to the forms page and clicking the "Build" button in the submenu (see above) will also work.
Changing a form's title
A form's title can be changed by choosing "Settings" from the submenu (see above) and changing the value in the "Title" field under General settings.
Delete a form
Deleting a form can be done by clicking the "Delete" button on the form's row in the webform list (under the "Operations" column, see photo above). Clicking the arrow next to "Build" will open a dropdown menu with the "Delete" option.
Add a new form
Navigate to /admin/structure/webform
See photo above for reference.
Click the "+ Add webform" button in the top right.
Add title, select status
You should see a modal like the one below:

By default, Status will be set to "Open". This means that the form will be available to users. If you want to create a form that is not yet ready to be used, you can set the status to "Closed" and change it later.