Explore · The library
Every resource founders actually use, in one library.
The essays, videos, podcasts, books and tools behind every answer across eChai's hubs, from starting up to go-to-market, D2C, founder money and AI, each with a note on why it is here.
What founders use most, ranked by how many answers lean on it.
- The rule behind trimming your onboarding, your pricing tiers, and your menus. More choices mean slower decisions, so this card... Laws of UX Article · 5 min read · Starting Up Hick's Law Jon Yablonski
- Why your primary button should be big and easy to reach, especially on mobile. The time to hit a target depends on its size and... Laws of UX Article · 5 min read · Starting Up Fitts's Law Jon Yablonski
- The chunking principle that keeps forms and dashboards from overwhelming people. Working memory is limited, so you group... Laws of UX Article · 5 min read · Starting Up Miller's Law Jon Yablonski
- The deeper, research backed treatment from the field's most trusted usability lab. It explains the actual mechanics of target... Nielsen Norman Group Article · 12 min read · Starting Up Fitts's Law and Its Applications in UX Raluca Budiu
- A short, practical take on when a long menu is actually fine. Hick's Law does not mean fewer items is always better, and this... Nielsen Norman Group Video · 3 min video · Starting Up Hick's Law: Designing Long Menu Lists Katie Sherwin
- A curated map of the psychology that underpins these laws, with links to go deeper on each. Rather than one principle, it... Nielsen Norman Group Article · 10 min read · Starting Up Psychology for UX: Study Guide Tanner Kohler
- A clear, example rich walkthrough of Hick's Law with the history and the practical moves side by side. It shows how to figure... Interaction Design Foundation Article · 8 min read · Starting Up Hick's Law: Making the Choice Easier for Users Mads Soegaard
- A hands on explainer of how size and distance shape whether a control feels easy or fiddly. It uses concrete UI examples,... Interaction Design Foundation Article · 8 min read · Starting Up Fitts's Law: The Importance of Size and Distance in UI Design Interaction Design Foundation
- A searchable library of the biases and principles behind user behavior, each with a short example. It goes wider than the core... Growth.Design Tool · Browse as needed · Starting Up 106 Cognitive Biases and Principles That Affect Your UX Growth.Design
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Video · Approx. 40 min video · Starting Up
Laws of UX: Using Psychology to Design Better Products and Services (talk)
Jon Yablonski
- A clear Hick's Law primer from one of India's established design studios, so the framing sits close to home. It lays out four... Think Design (India) Article · 7 min read · Starting Up Understanding Hick's Law and Its Application in UX Design Stuti Mazumdar
- Free, ready-to-use scripts (including a mobile-app version), observer instructions, and a form for noting the top three... Sensible (Steve Krug) Template · Starting Up Usability Testing Scripts, Observer Forms, and Checklists (Downloads) Steve Krug
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Video · Starting Up
Why Customer Onboarding is the Most Crucial Part of Your Growth Strategy
Casey Winters
- Hulick pulls apart the first run experience of well known apps screen by screen, showing what each step costs and what it... UserOnboard Article · Starting Up User Onboarding Teardowns Samuel Hulick
- A comic style teardown of Blinkist onboarding grounded in behavioral psychology, showing why each step helps or hurts. It gives... Growth.Design Article · Starting Up One Simple Psychology Framework To Improve Your Onboarding (Blinkist) Growth.Design
- Duolingo lets people finish a full lesson before it ever asks them to create an account, and this study breaks down why that... Growth.Design Article · Starting Up Duolingo's User Retention: 8 Tactics Tested On 300 Million Users Growth.Design
- Research backed rules for making forms feel effortless, which is where much of onboarding drop happens. It directly supports... Nielsen Norman Group Article · Starting Up Few Guesses, More Success: 4 Principles to Reduce Cognitive Load in Forms Huei-Hsin Wang
- A structured guide to diagnosing and fixing onboarding from one of the most respected growth education teams. It helps you map... Reforge Article · Starting Up Optimize new user onboarding Reforge
- A pointed case study in obvious labels over clever ones. A vague "Get Started" button reads as friendly but leaves people... Nielsen Norman Group Article · ~6 min read · Starting Up "Get Started" Stops Users Aurora Harley and Kim Flaherty
- Eye tracking evidence for how people actually scan a screen, which tells you where to put the things that matter. If your... Nielsen Norman Group Article · ~12 min read · Starting Up F-Shaped Pattern of Reading on the Web: Misunderstood, But Still Relevant Kara Pernice
- A former Facebook design VP walks through how to look at a screen and judge whether it works, from first impression to first... Julie Zhuo (The Year of the Looking Glass) Essay · ~12 min read · Starting Up How to Do a Product Critique Julie Zhuo
- Norman's own short essay on the idea that decides whether a control looks usable: affordances and signifiers. It is the crisp,... Don Norman (jnd.org) Essay · ~10 min read · Starting Up Affordances and Design Don Norman
- A short, clear video on why showing options beats making people remember them, with interface examples. If you prefer watching... Nielsen Norman Group Video · ~4 min video · Starting Up Recognition vs. Recall in User Interfaces Raluca Budiu
- Baxley led design at Apple and Pinterest, and here he talks about craft and the obligation to reduce the friction people feel... Lenny's Podcast (Bob Baxley) Podcast · ~90 min episode · Starting Up 35 Years of Product Design Wisdom from Apple, Disney, Pinterest, and Beyond Lenny Rachitsky and Bob Baxley
The hubs
Starting Up
Find an idea, validate it, build, and land your first customers.
GTM
Go-to-market, from breaking in to how the best teams do it.
D2C
Building a direct-to-consumer brand, India-first.
Wealth
Paying yourself, ESOPs, secondaries, and de-risking founder wealth.
How Founders Use AI
How founders actually put AI to work, mapped topic by topic.
Glossary
Plain-language definitions of the startup and VC terms you'll hit.
eChai Partner Brands
The partnership →