These other methods are useful if you are becoming a real estate agent as a second career. In some states, like California, you may be able to get the required hours through an online course you can complete in 2 ½ weeks, while Texas requires up to 180 classroom hours (six courses of 30 hours each). Real estate coursework covers a variety of topics dealing with the principles of real estate work, including contract and agency law, contract forms, and real estate financing.