These are professionals with additional training and a stricter code of ethics.

Just ethical to tee off the next buyer if they inherit her. 

But, before you even get to the point where you can read a good book, you need to understand the basics of RE, including general business ethics and legal requirements, otherwise, you can't pick out that one really good idea.      

You get the principles of RE, legal aspects of general business/contract and RE law, local customs, math needed, appraisal techniques and valuations, contract reviews and the basic flow of a transaction (any transaction), you get standards of ethical conduct, an understanding of what others do, title searches, laws of agency relationships and how others involved in a transaction must operate.

Looking for contractors who are responsible, with great work ethic who work in different areas of Philadelphia.

@Jake K. certainly this can be done in a moral and ethical way.

@Christopher Daniels I have a lender that I highly recommend, has very competitive rates and are very ethical.

Nobody questions your knowledge or work ethic.

Some promoters are not ethical nor are they looking out for your best interest.

I'm not a real estate agent, so I don't know/care about the realtor code of ethics.