As suggested in the call, I think we should relocate this into the docs folder

• Move file to docs/source/tutorials/
• Edit text file docs/source/tutorials.rst to include a link to this file.

Some other small suggestions

• Typo "guassian" in the first top header ;-)
• Add a succinct high-level summary paragraph at the start of the page. "This tutorial will teach you how to [big picture idea in a couple sentences]"
• There are a couple places where it looks like entire paragraphs are formatted as headers. Is that intentional? e.g. the entire paragraph shows up bold as a header for "First, we need to define the function for a line. Since the function for a line only contains linear parameters, no non-linear parameters are included. However, the fitfm function requires non-linear parameters, so we must include them in the definition of our line."
• It looks like you have a top-level header with one #, then a bunch of third-level headers with ###, but no second-level headers? Consider if it would help to add some intermediate headers, for instance ## Fitting a model with only linear parameters and ## Fitting a model also with nonlinear parameters