Many parents find that virtual schooling for a period of time is a gateway to more traditional homeschooling. Others prefer to do it themselves from the beginning, but need a full curriculum to get them started. There are plenty of options out there that come complete with stacks of materials. Many areas also have homeschooling supply swaps at the beginning of each school year where you can acquire the necessary curriculum at a budget.
You can also choose to build your own curriculum from scratch—but that’s a challenge best reserved for someone who isn’t trying to jump in with both feet. If you have some experience and feel up to it, though, by all means, go right ahead! Just remember that your child needs to adhere to state standards so that if they do go back to a traditional school eventually, they won’t be behind.