Real estate is indeed one of the safest investments and a lot of people use real estate as an investment avenue. Real estate law is not the forte of real estate attorneys and real estate agents only. Every real estate investor should understand at least the basics of real estate law. In fact, a short course or a concise book on real estate law can sometimes be of great help (and is generally sufficient for understanding the basics of real estate law).
What you need to understand is the real estate law with respect to the legal procedures that you need to follow for ensuring a smooth transfer of title to the property you acquire/sell in addition to other related procedures. You need to understand the fee structure (e.g. stamp tax, mortgage tax in states like New York, and title issues and concerns) that you need to take care of as per real estate law. You will also get a better understanding of the property classification and how basic real estate law applies to them. Why the commercial and residential properties are treated differently by the real estate law.
The tax laws with respect to real estate are one of the things that would be of most interest to you. So, your study on real estate law should also cover all the aspects related to taxes. How mortgages are treated in the perspective of real estate law is another thing that you should know about. Also, the real estate law which affect tenancy should also be well understood by people who wish to rent out their property.
However, you should not overdo that i.e. you should not start becoming hysterical about learning real estate law in order to practice like or replace your attorney (lest you end up wasting a lot of time in trying to learn everything about real estate law and be left with no time to evaluate your real estate investment). Leave the intricacies of real estate law to the real estate attorneys (and to some extent real estate brokers who too are taught real estate law as part of their course for obtaining broker licenses).
Understanding the various legal terms referred to in real estate laws can help you in not only enhancing your understanding of real estate but also help in making your conversations with real estate attorneys/agents really fruitful. You should also note that though some of the basics remain the same, the real estate laws vary across different states. Also, real estate laws (especially the tax related real estate laws) can undergo changes over a period of time, so you need to keep tab on such changes. Any signficant changes will appear prominently in news and you will get to know of them anyhow; But overall, knowing a little bit of real estate law can really be helpful (and is, in fact, essential).