To advertise your book, you can take the following steps.
1. Guest blog posts.
2. Make Your Own Podcast and Podiobooks.
3. Create a YouTube Channel.
4. Join reader groups on Facebook (and elsewhere)
5. Go on a Local Book Tour.
6. Promoted Posts on Facebook.
7. Use Your Mailing List.
8. Use Instafreebie.
You can read more here: https://www.draft2digital.com/blog/10-low-or-no-budget-ways-to-promote-your-book/
Besides if you do have any questions give me a call: https://clarity.fm/joy-brotonath