The following links provide useful background information for this microcontroller and using this controller board.
Data Sheets
AT89C51RE2 Data Sheet: Atmel - AT89C51RC2 Data Sheet
8051 Instruction Set: Atmel 8051 - Instruction Set
AT89C51RE2 Application Notes: AT89C51RE2 - Application Notes
DS1307 Real Time Clock Data Sheet: Dallas Semiconductor - DS1307 Data Sheet
Books
Programming: Programming and Customizing the 8051 Microcontroller
Software
Download Software: Atmel Flip Program
Useful Websites
Atmel: To Atmel website
Circuit Cellar Magazine: To Circuit Cellar Website
User Tips
If you have some useful tips or relevant information that would be helpful to other users, please send it to technical@futurlec.com