[PD] Textual pd primer

[Sam Raker]

Hi guys,
Longtime listener, first time caller. 
I was wondering if there's a good intro to text-only pd. I just got a raspberry pi, and I've heard a lot of chatter about how the -nogui flag solves a lot of weird dsp problems &c, plus it'd be nice not to have to waste a USB port plugging in a mouse as well as a keyboard/midi keyboard/sound card/m-audio box/etc. Plus my main comp is a mac, and I'm worried making my patches on my Mac and then getting them onto my pi will be a pain in the b. 

I've seen people say stuff like, "oh, just make a patch and look at it with a text editor and figure it out," but that's a bit over my head.

Thoughts?

-sam