When you’re building a simple ad-hoc doc with 2-3 tables and near to no views, don’t bother. Just use the tables, set them up in whatever way you want to work with them and go on.
For docs that are meant to be used continuously, organizing them in maintainable way is a good idea. Putting base tables each on separate page, “hiding” them away in a Database part of the doc, and only letting users interact with data through views are some of the basic good practices I advocate for. I talk a bit on this in the very first video of my Best Practices Showcase series: