01. Format
The listed courses are English-language PDF guides. No physical package is shipped. A compatible PDF reader is needed to read the material; a C++ development environment is needed for programming exercises.
02. Current availability
Course payment links and file delivery are not yet configured. Orders are not currently open. The title of this policy is not a promise that an unconfigured course can be downloaded immediately.
03. Delivery after purchase
Before purchases are enabled, the course or checkout page must identify the delivery method and expected timing. A delivery link may be provided by the configured checkout or a separate fulfilment service. This static website does not validate a transaction or send an email automatically.
04. Payment confirmation
A return from an external payment page is not, on its own, proof of a completed payment. Delivery must be based on confirmation from the payment provider or the seller. Do not assume that opening a checkout page completes an order.
05. Delivery difficulties
If a promised link or file is missing, check the instructions shown with your order and any email folders where it may have arrived. Contact published support with the order reference and course name if you still need help. See the Refund policy for available remedies.
06. Your use of the files
Download the supplied file to a device you control and keep a personal backup. A purchase permits personal study; it does not permit resale or public redistribution. Future revisions or additional guides are not included unless explicitly described with the purchase.
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