To publish a novel online, consider self-publishing through sites like Lulu. Sign up, upload your file, set the price if you want to sell it, and promote it on social media and relevant forums. Another option is to pitch your novel to established online publishing houses, but that might be a bit more competitive.
You can start by choosing a popular online publishing platform like Amazon Kindle Direct Publishing or Wattpad. Just follow their instructions to upload your manuscript and set up the necessary details.
First, make sure your novel is well-edited and formatted. Then, look into platforms like Smashwords or Draft2Digital. They have specific guidelines for submitting your work. You might also need to create an attractive cover and write a compelling description to attract readers.