Alan, if you're not familiar with the complexities of cCEF, a first step woud be to read some basic materials. The CEF Assn has some reading materials; I provide the link below.  scroll down on the right side you will find five introductory booklets of interest.

CEFA 

Each CEF has an equilibrium discount worth knowing.  Buying it at that discount or  greatercan be important.  One also nees to know the makeup of the distribution. Many closed-end funds, including the reit CEF,  often return shareholder paid in capital.  Good luck!