Mem Tutorial: How to Build a Second Brain with Mem

Building a “second brain” in Mem hinges on one practical move: organize knowledge into a four-part system—Projects, Areas of Responsibility, Resources, and Archives—then use Mem tags so related items automatically surface together. The payoff is faster retrieval and less clutter, because each piece of information lands in the right bucket and stays connected to the work it supports.

The framework starts by separating time-bound work from ongoing responsibilities. Projects are defined by a timeline and a clear endpoint—examples here include creating a course (“attention mastery”) or taking a specific class (Master Class by Andy Lewis). Areas of Responsibility, by contrast, are ongoing commitments that recur on a schedule. For a writer and podcast host, the editorial calendar and weekly content production function as areas of responsibility rather than projects.

Resources are the raw material of knowledge capture: book notes, podcasts, and other references pulled from the web. The transcript gives a concrete example using a book (“The Self-Employed Life” by Jeffrey Shaw). Notes from the book and notes from a podcast conversation with Jeffrey Shaw are linked through shared identifiers, so whenever the name appears, both the book notes and interview notes are reachable from the same reference trail.

Archives complete the system by removing “done” items from active workflows. Once a project or resource is no longer needed, it gets tagged as an archive so it doesn’t keep showing up in projects and overwhelm planning views.

A key implementation choice determines whether the system stays manageable: use tags rather than separate Mem pages for each category. Creating separate Mems for Projects, Areas, Resources, and Archives can force lots of manual linking between related items. Instead, the approach described relies on tags so Mem can generate individual views automatically. For instance, items tagged as “projects” appear under a Projects timeline view, and items tagged as “editorial calendar” show up under the relevant area-of-responsibility list.

The transcript also recommends keeping pages from turning into “jumbled messes.” Rather than dumping everything into one Projects page, it’s better to create separate Mems for components of a project—tasks, modules/content, and references—so each project remains navigable. The same logic scales to content creation: a blog post can live under an editorial calendar area, but each individual post gets its own Mem so the system evolves as more pieces are added.

Overall, the method is tool-agnostic in principle (originating from Thiago Forte’s second brain methodology), but the tutorial’s practical focus is on how Mem’s tagging and linking make the framework usable. The core instruction is straightforward: set up the four categories, then start tagging everything you capture—projects, ongoing responsibilities, resources, and archives—so your knowledge becomes searchable and ready when you need it.