1. Find website: First, find the relevant guest blogging sites, that offers a guest post with dofollow link.
2. Approaching: Ask the author to post your content on his/her website.
3. Topics: If you had done all the negotiations, then send some good topics to the author for the selection.
4. Write Content: Now, write content as per the website guidelines with proper punctuation's and send it to the website owner.
Now just wait for the posting.