The official source ( http://www-01.ibm.com/software/lotus/training/ and links from there) gives you a fair amount of information, including the required exams for each certificate, and the prerequisites and objectives for each test. They give a link out to one or more of the commercially available practice tests, which may be money well spent. Even without that, a combination of the list of objectives, Lotus' product documentation ( http://www-01.ibm.com/software/lotus/support/domino/doc.html ), and actually doing the work on a real machine should set you in a good position to pass the exam(s).

The official source ( http://www-01.ibm.com/software/lotus/training/ and links from there) gives you a fair amount of information, including the required exams for each certificate, and the prerequisites and objectives for each test. They give a link out to one or more of the commercially available practice tests, which may be money well spent. Even without that, a combination of the list of objectives, Lotus' product documentation ( http://www-01.ibm.com/software/lotus/support/domino/doc.html ), and actually doing the work on a real machine should set you in a good position to pass the exam(s).