Know when and how you are going to start taking initiative for your own family's learning and then take the next step. Make whatever legal notification is required. Only make whatever legal notification you are required to make to local governmental authorities after you have learned what your local law is from a homeschooling association, and have checked that law in a statute book or code of regulations for your locality. Homeschoolers in Minnesota and some other states of the United States are required to notify their local public school district once a year of their intent to homeschool their children of school age. Get involved with a local group.
Most parents find local homeschooling support groups to be very helpful.
Teenagers who are taking initiative for their own learning with their parents' consent can also participate in support groups. In some places there are resource centers for teenage or older learners who learn outside of school. If no support group or resource center exists in your area you could form one. That would be a learning experience in itself, and helpful to other people. If you can't find a local support to your tastes after contacting statewide or provincewide organizations for referrals, you could start your own support group which will likely attract some experienced homeschoolers as members even if you are new to homeschooling yourself.