@OliCait, I just noticed you'd included the URL for your blog in another post. I checked it out, and I think the issue is that you have posts set to "infinite scroll." That works great for people who blog about random things but doesn't work well for a story format because everything ends up in reverse order. If you turn off infinite scroll (or whatever it's called on Blogspot), you'll probably get the "next post" links automatically. Then I'd suggest adding an index of your posts in order so new readers can easily find the beginning of the story.
Hope that helps!
P.S. Look in "settings" under "reading" and, if you can't find "infinite scroll," there should be something that lets you set how many posts can be seen on a page. If you set it to "1 post," that should do it as well.