It seems like you provided some information about downloading files using the Internet Download Manager (IDM). Here's a summary of what I found:

1. The key is: `for apple download Internet Download Manager 6.41.20`

2. There are links for downloading CSS Notes and Books.

3. Internet Download Manager (IDM) version 6.42.2 + Portable ML/ES has been activated, which is an advanced software that manages downloads and accelerates file transfer speeds using its new technology.

4. IDM's logic for file downloads has been optimized in version 6.41, allowing it to dynamically split downloaded files into segments without requiring a serial number.

5. The tool can increase download speeds by up to 5 times, resume interrupted downloads, and schedule downloads in advance.

Here are some benefits of using Internet Download Manager (IDM):

1. Improved download speeds: IDM can accelerate your file transfer rates by up to 5 times.

2. Resume interrupted downloads: If a download is interrupted, you can easily resume it from where it left off.

3. Schedule downloads: You can schedule your downloads in advance, making it convenient for managing large files.

4. Easy-to-use interface: IDM features a simple and user-friendly graphic interface that makes it easy to navigate.

Please let me know if there's anything else I can help you with!

For apple download Internet Download Manager 6.41.20