Apex & VF

• SOQL List For Loop vs SOQL For Loop (Click here)
• Governor limits in salesforce (Click here)
• Order of execution in Salesforce (Click here)
• OWD in salesforce (Click here)
• What is junction object in salesforce? (Click here)
• With sharing and Without sharing in salesforce (Click here)

•  Batch class in salesforce (Click here)
• Future method in salesforce (Click here)

• SeeAllData in Salesforce.  (Click here)
• Wrapper class in salesforce (Click here)

• custom settings in salesforce (Click here)
• Call Apex Code from a Process builder in Salesforce (Click here)
• Apex Code Best Practices (Click here)

• Action function in visualforce (Click here)

• Action support in visualforce (Click here)

• viewstate in salesforce (Click here)