Have you ever needed to embed a powerpoint slide in a website?

Its fairly straightforward. Go to powerpoint online and load your presentation and choose to edit it online. You can get the embed code from the file share embed options

The size of the Magento database can increase dramatically. A lot of this space is taken up by log files. To manually flush the log files:

Have you ever needed to work on a site while stopping access for other users. These .htaccess mods will allow you to do just that

On the live server create a file backup and a database backup ( check your disk space first as Magento installations can be large )