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.
- ClearTax is one of the most used filing platforms in India and this guide is written specifically around the newer fast track... ClearTax Article · D2C GST Registration in 3 Days: Step by Step Process Guide ClearTax
- If you plan to use Amazon FBA or Flipkart FBF warehouses, your GST registration doesn't stop at one state, this explains the... Virtual Office Kochi Article · D2C Multi-State GST for Amazon & Flipkart Sellers: The 2026 Guide Virtual Office Kochi
- This is the actual GSTN advisory behind the 30-day rule, straight from the regulator rather than a paraphrase, so you know... GSTN (Goods and Services Tax Network) Report · D2C Advisory on Bank Account Validation GSTN (Goods and Services Tax Network)
- The official step-by-step manual for the exact screen you will be on when you add your bank account, so you are not guessing... GST Portal (tutorial.gst.gov.in) Article · D2C Manual: Amendment of Non-Core Fields (Bank Account Validation) GST Portal (tutorial.gst.gov.in)
- Cuts through the portal's cryptic status labels so you actually know whether you're done or still exposed to suspension after... ClearTax Article · D2C All About Bank Validation Status on GST Portal ClearTax
- The clearest field-by-field breakdown of what Rule 46 actually requires, with the HSN-digit rule spelled out by turnover slab... Tally Solutions Article · D2C GST Invoice: Format, Types, Mandatory Fields & Examples Tally Solutions
- The clean global baseline for what belongs on any invoice, useful to sanity-check your GST-specific template is not missing... Xero Article · D2C What to include on an invoice: a complete guide for small businesses Xero
- If you bill through Shopify, this is the primary doc for where your GSTIN and tax settings actually plug into the platform,... Shopify Article · D2C Shopify Help Center: Taxes Shopify
- Zooms out from the single invoice to the bookkeeping system it feeds into, so your first invoice lands in a set of books that... Shopify Article · D2C Ecommerce Bookkeeping 101 for Small Business: A Step-by-Step Guide Shopify
- This is Meta's own plain language explainer of the auction, the primary source for the three inputs your ad is actually judged... Meta for Business Article · D2C Facebook Ad Auctions Explained Meta for Business
- Once you know the auction has a bid component, this is the clearest breakdown of which bid strategy actually controls what,... Jon Loomer Digital Article · D2C Facebook Ads Bid Strategies: Lowest Cost, Cost Cap, Bid Cap Jon Loomer
- Since creative wins the auction, this guide teaches you to actually use Meta's free public Ads Library to see what every... Foreplay Article · D2C Facebook Ads Library: The Definitive Guide Foreplay
- Meta does not charge GST on its invoice to Indian advertisers, so most founders underestimate the real cost of their ad spend... Legal Suvidha Article · D2C Facebook Ads TDS & Refund Rules 2026-27 Legal Suvidha
- Reports the removal of the 6 percent equalisation levy on foreign digital ad platforms from April 2025, a real change to the... Business Standard Report · D2C India to scrap 6% equalisation levy on digital ads, leading to revenue loss Business Standard
- An independent market data report on where Indian digital ad spend is actually going, useful for benchmarking whether your own... Sensor Tower Report · D2C India State of Digital Advertising 2025 Sensor Tower
- It is the exact screen by screen path Meta expects you to follow, useful for cross checking against whatever a paid tutorial... Meta Business Help Center Article · D2C Set up and install the Meta Pixel Meta Business Help Center
- Read this before touching any settings so you understand why CAPI exists, not just how to click through it. Meta Business Help Center Article · D2C About Conversions API Meta Business Help Center
- This is the actual settings page language you will see inside your own Shopify admin, so it removes guesswork about which... Shopify Help Center Article · D2C Facebook data sharing Shopify Help Center
- Running pixel and CAPI together without matching event_ids just means you're double counting, not building redundancy. This... Meta for Developers Article · D2C Handling Duplicate Pixel and Conversions API Events Meta for Developers
- If you're not on Shopify or want a CAPI setup independent of your platform's native app, this is the clearest independent... Jon Loomer Digital Article · D2C Set Up Meta Conversions API Gateway Using Stape Jon Loomer
- Turning on CAPI is step one. This is the step two guide for making sure the data you send is actually good enough for Meta to use. WeltPixel Article · D2C Meta Event Match Quality (EMQ): How to Improve Your Score WeltPixel
- Indian founders hit business verification friction Western guides never mention. This is written for exactly that gap, using... Interakt Article · D2C 10 Step Guide To Get Meta Business Verification [Without Website] Interakt
- A clear technical comparison from a Chennai built team that builds first party data tooling for a living, useful once you're... CustomerLabs Article · D2C Conversions API vs. Meta Pixel: What's Better for Tracking? CustomerLabs
- Most tracking guides ignore what stage a brand is at. This one is pegged to a specific, realistic Indian D2C spend level, so... Wittelsbach Report · D2C 10L/Month D2C Brand Meta Ads Playbook: From Survival to First Profitable Spend Wittelsbach
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 →