This may not be the answer you are looking for, but I would just use an existing product rather than try to create a new one. For the use case you describe, I

This may not be the answer you are looking for, but I would just use an existing product rather than try to create a new one. For the use case you describe, I would just use an online word processor like Google Docs with a new document for each week. It would probably also work with Office 365 or iCloud Pages depending on which platforms you prefer. Google Docs, Office 365, and iCloud Pages all have multiple clients for a variety of platforms (laptop, desktop, iPad, etc.) and supports exporting documents to web pages and a variety of other formats. Are you wanting to write your own as an exercise? Or perhaps there is something that prohibits using one of the online word processors?