Our PG kid really enjoyed Minimus at age 8. He went on to more in-depth Latin study later, but it was a good place to start. After Minimus I would suggest Ecce Romani and Oxford Latin. One good thing with Ecce Romani is that it is the most popular secular program which means there are tons of free resources (quizzes, etc.) available online. Also, before too long take a look at the National Latin Exam and the National Mythology Exam if those are of interest.
http://www.nle.org/ http://www.etclassics.org/nme.html Neither exam has age restrictions and are open to homeschoolers.
