Use "drag and drop" or the "Add" function to choose the files you want to burn onto the CD
Click on "Next" when you are finished adding.
Select your burn speed (usually the maximum is best)
Then hit the "Burn" button!
The CD will now be created.
Open the program.
Select your project (e.g. Data CD)
Use the top window pane to select your files (like windows explorer)
To add files click on "Add"
When all files have been selected click on the Record button (Big red dot)
Select burn speed (similar screen to Nero for burn speed options etc.)
Very condensed explanation for burning data. For audio, select the audio cd option (only use mp3 to play mp3 songs on your PC or compatible player - most hi-fi's DO NOT play mp3 audio CD's although many DVD players do). The main difference you'll notice is the bar at the bottom of the screen (in both cases) which tell you how much space you have used/left.