In most cases, WordPress installation is a very simple process that takes less than five minutes to complete. Many web servers now offter tools to automatically install WordPress for you.

1) Requirements for WordPress

Make sure that your web host has the minimum requirements to run WordPress.
You can download the latest WordPress release from WordPress.org

2) Requirements for Opal Theme WP

To use Opal Theme please make sure that your hosting is running as the following features:
WordPress 5.2+
PHP 5.6+
MySQL 5.6+
Max_execution_time 600
Memory_limit 512M
Upload_max_filesize 40M
Post_max_size 48M
For threads to work, change permalinks to the post name format. This is required, should be done immediately after activating the theme