Here's a list of links that are useful for beginners and advanced users of APEX:

• apex.spendolini.blog - This is the companion APEX site for this blog; examples are hosted here
• apex.oracle.com - Oracle's freely hosted instance of APEX
• apex.oracle.com/shortcuts - a list of APEX-related pages hosted by Oracle
• cloud.oracle.com/free - Oracle Cloud's Free Tier sign up page