Installing Drupal

I have reached database configuration and this error keeps coming up.
Failed to connect to your database server. The server reports the following message: SQLSTATE[HY000] [1049] Unknown database 'tkc'.
I have tried different names with same effect. I appear to have the database host correct but the database name seems to be the problem but I have set up the process.
I don't know how to set up a database in the process which seems to be the problem.
Any help would be appreciated.

Using Drupal 7.41 on nearlyfreespeech.net
This is the error that prevents me from proceeding to Installation.
An internal server error occurred on http://twokingschess.nfshost.com/. Usually this is due to a problem with a script or .htaccess file.

Dear All,
I have a dedicated server and i want drupal 8 available as cpadon site software in CPanel for all clients.
Please help me where i can find Drupal's Vendor Information URL to complete my installation.

I installed Drupal 8, entered in the log in the admin panel, and there is the following warning:

Warning: Cannot modify header information - headers already sent by (output started at .../www/vendor/symfony/http-foundation/Response.php:1151) in Drupal\Core\Session\SessionManager->destroy() (line 267 of .../www/core/lib/Drupal/Core/Session/SessionManager.php).

On my hosting no PHP OPcode. Hoster promised later to install. Drupal is installed because it is not a critical requirement.

Could this module make this error? If not, what I do next?

Could any of you Drupal aficionados advise why v.8.x fails to install on MAMP Pro v.3.4 (the latest version of MAMP)?

Apache version: Apache

Due to the settings for ServerTokens in httpd.conf, it is impossible to accurately determine the version of Apache running on this server. The reported value is Apache, to run Drupal without mod_rewrite, a minimum version of 2.2.16 is needed.

PHP Opcode caching: Not enabled
PHP OPcode caching can improve your site's performance considerably. It is highly recommended to have OPcache installed on your server.

I have done a fresh install of the production version of Drupal 8. I have done it several times. Whenever my new site is presented, there is no CSS. I logged in as admin, no CSS. There were a few URLs in the admin submenus that when clicked did cause the linked page to load CSS. I did not see anything obvious in the configuration.