Jesse fields more listener questions today, including what you should do when you double your income (teaser: there's really not a wrong answer as long as it's saving!), how to budget for real estate investments, and whether debit cards have sufficient fraud protection to use over credit cards.   Please keep your questions coming! Send them to: askjesse@ynab.com     Sign up for a free 34-day trial of YNAB at www.youneedabudget.com