: Ensure you have every segment of the archive. If the set has 10 parts, you must have all 10 in the same directory.

: A file ending in .part1.rar is the first volume of a split archive.

: When you begin extracting the first part, software like WinRAR or 7-Zip will automatically find and merge the other parts to recreate the original large file. How to Extract the Course Content

: Right-click on part1.rar and select an option like "Extract Here" or "Extract to [Folder Name]" using WinRAR.