We accept all major Indian payment methods through our secure checkout:

• UPI – Google Pay, PhonePe, Paytm, BHIM UPI
• Debit / Credit Cards – Visa, Mastercard, RuPay
• Net Banking – all major Indian banks supported
• EMI – available on select cards for orders above ₹999
• Wallets – Paytm Wallet, Mobikwik

All transactions are secured with 256-bit SSL encryption. Sleepy Classes does not store your card details.

Yes. You can add multiple e-books to your cart and check out in one transaction. Each e-book is processed as a separate digital product and will appear in your order confirmation and account library simultaneously.

If you are purchasing as a batch or coaching institute, email us at [email protected] for bulk pricing options.

Yes, a Sleepy Classes account is required. Creating one takes under a minute — just your name, email, and phone number. Your account is your permanent library: every e-book you buy is stored there and can be accessed any time, even years later.

If you already have a sleepyclasses.com account (for courses or downloads), use the same email — your store purchases will appear in the same login.

Yes. All prices on store.sleepyclasses.com are inclusive of 18% GST. You will not be charged any additional tax at checkout.

A GST-compliant invoice (GST No. 03ABDCS3013L1ZN) is automatically emailed after purchase, usable for reimbursement or tax filing.

Access is instant. As soon as your payment is confirmed:

• You receive a download link in your registered email inbox.
• The e-book also appears inside your account under My Orders → Downloads.
• Click the download button to save the PDF to your device.

If you don't see the confirmation email within 10 minutes, check your spam/promotions folder before contacting support.

Each purchase allows downloads on up to 3 personal devices (phone, tablet, laptop). The PDFs work on any reader: Adobe Acrobat, Google Drive, Apple Books, WPS, Foxit, or your browser.

Note Sharing download links or files with others violates our Terms of Use. Each purchase is licensed for individual use only.

Download links do not expire. Your purchased e-books are permanently accessible from My Account → Downloads as long as your Sleepy Classes account is active.

We recommend saving a local copy on your device or cloud storage (Google Drive / iCloud) so you can study offline without re-downloading.

Yes. Once downloaded, the PDF is stored locally and does not require an internet connection. Ideal for revision during commutes or in low-connectivity areas.

You can also upload it to Google Drive or Dropbox for seamless sync across devices.

Each e-book is designed to be self-sufficient for that subject and paper:

• Polity & Governance covers the full Laxmikant syllabus plus governance linkages.
• Sociology Paper 1 Notes cover the complete optional syllabus with thinker insights and frameworks.
• Science & Technology integrates ISRO, DRDO, and policy sources — replacing multiple notes sets.

NCERTs remain useful for foundational context, but these notes are designed to reduce — not add to — your study burden.

Content currency varies by e-book — the last updated date is stated on each product page. Most GS and Optional e-books have been reviewed for UPSC CSE 2026 relevance.

Important For dynamic topics like Current Affairs and Internal Security, supplement with Sleepy Classes' free monthly PDF compilations at sleepyclasses.com/downloads.

When major updates occur (new policies, landmark judgements), revised versions are released and you can re-download at no extra charge.

For GS beginners, we recommend:

• Polity & Governance by Ayush Sir — the most structured GS entry point.
• Ancient & Medieval History by Sonpriya Ma'am — civilisation-first, clear writing.
• Ethics GS4 by Ravikant Sir — beginner-friendly, zero jargon.

For Optional beginners, Sociology Paper 1: Complete Chapter-Wise Notes by Shekhar Sir is the gold standard, endorsed by toppers including AIR-2 (2023).

Not sure? Call us at 1800-890-3043 (Mon–Sat, 9AM–5PM) for guidance.

Because e-books are instantly delivered digital products, all sales are final once the download link has been accessed.

Exceptions considered:

• Duplicate payment charged for the same order.
• Technical failure where the file was never delivered and support cannot resolve it within 48 hours.
• Content significantly misrepresented versus the product page description.

Email [email protected] within 7 days of purchase with your order ID for any of the above.

This can happen due to network timeouts during payment. Here is what to do:

• Note both transaction IDs (UTR numbers for UPI) from your bank statement.
• Email [email protected] with subject: "Duplicate Charge – Order [Your Order ID]" and attach a screenshot of both transactions.

We will verify and initiate a refund to your original payment method within 5–7 working days.

This usually resolves automatically within 15–30 minutes. First:

• Wait 15 minutes and refresh your email inbox (check spam too).
• Log into your account and check My Orders.
• If the order shows "Payment Pending", the amount will auto-refund within 5–7 working days.

If the order shows "Completed" but the download fails, email [email protected] with your order number and a screenshot.

Try these steps in order:

• Re-download from your account — the original download may have been interrupted.
• Change your PDF reader — try Adobe Acrobat Reader (free) if using a browser viewer.
• Check storage — ensure your device has at least 500 MB free space.
• Try a different device — open it on another phone or laptop.

If none of the above works, contact us with your order ID and we will re-generate the download link.

Yes. Printing is permitted for personal, non-commercial study use only. You may not distribute printed copies to others, resell printed versions, or upload the PDF to any public platform.

Some e-books may have printing restrictions set at the file level. If you encounter this, email support with your order ID and we will assist.