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.
- 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
- A single glance-able calendar to put your GSTR-1/GSTR-3B dates straight into your own calendar instead of hunting through... ClearTax Tool · D2C GST Calendar 2026-27: GST Due Dates, Filing Deadlines and Compliance ClearTax
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Video · D2C
GST Returns Filing 2026: How to file GST Returns, GSTR-1, IMS & GSTR-3B
YouTube
- The rare resource that sequences the tasks in order instead of listing rules alphabetically, so you know what to do this week... CA in Bangalore Template · D2C GST Compliance Guide for First-Time GST Registrants: Month-by-Month Checklist CA in Bangalore
- If you want compliant invoices and eventual e-filing from one tool rather than stitching together a billing app and a separate... Zoho Tool · D2C Zoho Books: GST Billing Software built for Indian SMEs Zoho
- 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 your D2C brand plans to sell outside India too, this is the cleanest mental model for treating tax registration as a... Stripe Template · D2C Getting Started: Sales Tax Compliance Checklist Stripe
- 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
- A ready-made checklist format, not just an article to read, that you can literally tick through while setting up your invoicing... A2X Template · D2C The ESSENTIAL Ecommerce Bookkeeping Checklist A2X
- 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
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Video · D2C
The BEST Facebook Ads Bidding Strategy
Ben Heath
- 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
- A step by step walkthrough of the Meta ad strategy behind some of the largest DTC brands, from someone who has operated and... Splitbase Podcast · D2C A Facebook Ad Strategy Used to Grow the Biggest DTC Ecommerce Brands, Explained Step by Step (with Nik Sharma) Nik Sharma
- A founder oriented course built by growth marketers who have run Meta campaigns across hundreds of startups, pitched at the... Demand Curve Course · D2C Meta Ads (FB + IG) Demand Curve
- A current, ecommerce specific conversation on how Meta's growing automation is changing what a media buyer actually spends... 7-Figures & Beyond Podcast, Stryde Podcast · D2C Ecommerce Meta Ads Trends & Insights For 2025 (Episode 53) 7-Figures & Beyond Podcast, Stryde
- 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
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 →