I need to refresh some web design skills and learn some new ones. Any web designer knows s/he must keep up with current techniques and sometimes develop new ones.

These are a few resources I’ve found useful:

Refreshing on secure logins
https://codeshack.io/secure-login-system-php-mysql/

Learning CSV to MySQL import technique (there are others):
https://phppot.com/php/import-csv-file-into-mysql-using-php/

Purchasing: FILEPICKER – MULTI FILE UPLOADER PHP SCRIPT
Old websites running Flash Upload scripts may find this one useful.
https://www.inkthemes.com/market/file-uploader-php-script/

Learning Cloud Storage Basics *but starting with Wasabi*:
*This is a daunting task for me.*

Wasabi Storing Objects in a Bucket
https://wasabi.com/wp-content/themes/wasabi/docs/Getting_Started/topics/Storing_Objects_in_a_Bucket.htm

Using PHP Composer on Shared Hosting (Webhost specific)
https://www.inmotionhosting.com/support/website/using-php-composer-on-shared-hosting/

More Composer info:
https://getcomposer.org/download/

More Host Specific AWS SDK (Wasabi uses it) info:
https://www.inmotionhosting.com/support/questions/en/communities/1/topics/17155-aws-sdk-tutorial-for-php-with-inmotionhosting