The Great Homeschool Convention serves both secular & religious homeschoolers. It is one of the largest homeschool conventions. It is a great source for learning how to homeschool, why to homeschool & learning
about the 100's of different types of curriculum.
Christian Home Educators Association Conference is a Christian Homeschool Convention therefore only Christian curriculum is represented at this convention.
California Homeschool Network puts on a smaller convention but more geared towards the whole family.
For those that Game school. This is popular for unschoolers too.