Reference Book: 
Modern Digital Designs with EDA, VHDL and FPGA  

Documents

Title	Version	Size(KB)	Date Added	Download
DE1 Board Introduction		929	2006-10-12
Getting Started User Manual	1018	2360	2006-10-12

Project

Title	Version	Size(KB)	Date Added	Download
DE1 SD Card Music Player (fixed)		1018	2006-12-29
DE1 Music Synthesizer Source Code		236	2006-11-16

CD-ROM

Title	Version	Size(KB)	Date Added	Download
DE1 CD-ROM	1.0.2		2015-12-30
DE1 Control Panel	2.1.0		2015-12-30

Please note that all the source codes are provided "as-is". For further support or modification, please contact Terasic Support and your request will be transferred to Terasic Design Service.
More resources about IP and Dev. Kit are available on Altera User Forums.

Other course resources you might interested:

School: Cornell UniversitySenior Lecturer: Bruce Land
Course 1: - ECE5760 Advanced Microcontroller Design and system-on-chip [DE2]
Course 2: - ECE 5760 Simplified Floating Point for DSP [DE2]