Which section to start with when writing a research paper Which section of a research paper should be written first? When I finally finish my analysis I begin to write the Methods section and the Results section. That is the first "block" of my writing. After that, I discuss it with co-authors (they are of course involved in the analysis, but at this stage they have the real results, graphs, and tables) and co-workers. Only after that do I begin to write the Discussion section and the Introduction. Is that right or is it better to write it in a different order?
There's no 'right' order. Starting where you feel able to do so is far better than not getting started. I usually write lots of sections concurrently, or start writing and work out what the sections are later.

On the other hand, it will make your life somewhat easier if you can work roughly in order of dependencies, so you don't have to keep changing what you wrote earlier. From example, it might be helpful to write out some of your notation before you start using it. The introduction will often come late in the process for this reason.