Some people want options that are secular, but definitions of what secular means vary.
To some, secular simply means that it isn't faith-based and doesn't involve religion, but is neutral when it comes to a stance on the origins of the world and doesn't come from any particular religious viewpoint. These options may be used not only by those without a faith, but by those who have a strong faith but don't want curriculum that might teach another viewpoint.
To others, secular is more than that
and not only doesn't include religion but is against religion, and should not leave out talk about origins but must talk about evolution at all levels of science. Therefore, if you want secular curriculum, explore carefully the curriculum chosen to see if it matches the viewpoint you want.
See these links for secular curriculum options:
Popular free option: https://www.khanacademy.org/
Public school-at-home options:
Some people prefer to stick with public school options, especially when first starting out. Note that public school options are not necessary even if a child plans to return to public school later. Public schools cannot require use of their materials or standards while homeschooling in order to later enter public school with full credit for courses taken while homeschooling. Check here for the process of enrolling a child into a school after homeschooling.
If a student will enroll in a Florida public high school after 9th grade, it may be helpful to consider public school graduation requirements in advance.
The Flex version of FLVS is a version of public school that can be used while homeschooling without having to take on the testing, attendance hours, health records, and other requirements of public schools. Parents can sign up their children for just one class or a couple or even a full slate of classes. The FLVS Flex option can be signed up for at any time of the year (though sometimes they've closed registration temporarily after the beginning of a school year--until they catch up with registrations). The parent is in charge of grade level selection (except for K and 1st grade when they are very strict about the child's age). The child must keep to the pace required by the school, turning in a minimum number of assignments per week, but they can be done any day of the week or time of day that the parent chooses.
See this link for FLVS Flex information for home education parents.
CPalms is a website run by the Florida Dept of Education which has public school online resources that can be used by parents: CPalms.org