What is a noodle??  Isn't it like pasta like stuff?

Yes it is.. but it is also something magical... in Music, Noodlin' means Just playing notes and phrases with no
particular meaning
Ex: Stop "noodlin" around man. Let's get
working.

SO, A noodle is similar to a jam, but with less meaning.. it is strictly just goofing around.... it can have structure, or no structure, but it has to be just fun, and random.... I think you you will find you learn some, and even may find that one sound you have been tryin to find.... so, give it a shot!