Open your desire browser and type in the address http://localhost/drupal/. Select Standard option then left click on the "Save and continue" button (drupal3.png)

If you did not add any additional language other than English, you have no choice but left click on the "Save and continue" button (drupal4.png)

Check to make sure you meet all the requirement settings but if seeing the error as in the screenshot, dont panic but proceed to the next step (drupal5.png)