ByteBar sells digital study products — PDF guides and practice question packs delivered instantly after checkout. All products are for your personal use only. Do not redistribute, resell, or share your downloads. Payments are processed securely. Refunds: if your download doesn't work or a file arrives corrupted, email bytebarhq@gmail.com within 14 days and we'll fix it or refund you in full. Because these are instantly downloadable files, we can't offer refunds for change of mind once a file has been downloaded. By purchasing from ByteBar, you agree to these terms.