Useful SFDC Link

Small Tricks & Tips:

1) To execute batch process from console - 

    System.schedule('Job1', 'ss mm hh * * ?', new BatchClassName());

2) Send Single Email using apex-

            Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();

            mail.setToAddresses(new String[]{email});

            mail.setSenderDisplayName('Test Display Name');

            mail.setSubject('Test Subject');

            mail.setPlainTextBody('Test Body');

            Messaging.sendEmail(new Messaging.SingleEmailMessage[] {mail});

2) If Date field open with pop up -

            

           .dateFormat{
                visibility:hidden;
            }