The aspirants should first look at the PMI’s website for answers. It is the best information resource pertaining to all type of certifications. PMI’s website should be the primary source of information and aspirants must avoid rumors, heresy and popular wisdom.
For quick answers, PMI has collated a web page having FAQ related to different certifications. This web page can clear many doubts that an aspirant have about various certifications. It contains information about the certification, its associated procedure and life after getting the certificate.
For more details, aspirants can refer to the certification handbooks (these are also available on PMI’s website).
Good luck for prospective candidates.