This is what im wanting to do but i dont know where to actually start. i have a framwork build already done and yea just want to know if i can get some examples of how to do this..... new to programming and i do like processing since you can do tones of stuff on it but yea. i read some notes on some of the stuff i have to do but yea dont really understand it....

All positions should be stored in an array.
Increase the size of the array as you drag with the mouse.
By using an int, switch draw modes to display the painting in 4 different ways
Points, lines, and you chose the other 2.
Swap between draw modes using the numbers on the keyboard.
Add user instructions to the screen that appear at the start
and move offscreen after 4 seconds. Have a rectangle help
button that when clicked brings up the help menu.
Add the ability to save the vector paths to a csv text file
Add the ability to load the vector paths from the text file
Add the ability to save a PNG of the output



thanks to whoever can help me i really appreciate it and hopefully i can help people in the future.