For homeschoolers, the concept of curriculum is understood. For non-homeschoolers, this word merits a little explanation.
A curriculum is basically what you are going to study. Unless you are an Unschooler (meaning you base the work on your child's interests as they evolve), you will need to pick a curriculum.
Many people start with the most popular sites such as homeschool.com or AZGomilipitas or homeschool online to get ideas.