you will need to know about:
micro controller and its datasheet
led
c language and soldering.
lets start.
step 1:
step 2:
install winavr and configure programmers notepad
step 3:
write a simple code reading data sheet.
step 4:
arrange the micro controller according to circuit for hex code transfer.
step 5:
step 6 :
connect to led circuit and see the LIGHT of happiness on your face.