In my search for up-to-date tutorials on connecting sensors to Processing I found a few valuable threads.
They are clear, the code is GPL, the aesthetics are – well I guess not my taste – but opinions are very easy to get by – good tutorials – less easy to find (=a critical compliment). Jeremy goes a step further than the usual Hello World “Blink a led sketch”. I didn’t do what he does at 20 years old.

He starts with an introduction to Arduino:
http://jeremyblum.com/category/arduino-tutorials/

In tutorial 6 he already goes from receiving information from a sensor to sending out serial information for Processing to receive.
Tutorial 7 continues on this visualizing sensor information thread.

These two tutorials combined with this one from the Arduino playground website, will hopefully enable me to visualize my flex sensor data – my deadline is tonight. (Gloups – Gulp – Slik)

Found through the use of a search engine and this blogpost.