WordPress Installation Video
Nowadays all the major hosting companies such as offers One-Click Installation so in most cases, you might not need to install it manually.
For any reason, One-Click install option is not available you can refer to the official WordPress installation guide. To speed up the process I highly recommend to check out a much simpler (unofficial) Complete WordPress Installation Tutorial by WPbeginner which includes both One-Click and Manual (FTP) installation.
What’s next? Go access the Dashboard.
STEP1: Login to WordPress admin dashboard (Example: site.com/wp-admin).
STEP2: After successful login, you will be auto-redirected to WordPress Dashboard.