I have written blurbs on the following practical issues for a gringo moving to Puerto Rico:
Your Name. I'll bet you didn't expect that to be a "practical issue", but it's relevant to all of the rest of them as well.
2004 March: I received a note from a company that provides "training" and advice on living in Puerto Rico. They particularly mention the problem of relocating family. I don't have any personal experience with them. There may be others as well. There are also relocation services that will do some of the legwork for you.
The Arecibo Observatory
Last modified: Fri May 21 16:57:27 AST 2004