Yes and welcome aboard! If you have specific question, you can use our PLi® Third Party Development forum to ask it. You will find we are most accommodating.
This page is about software development using OpenEmbedded-core. If you're looking for the text that used to be on the this page, it's now called developer-information-old.
See also this forum post on setting up a development environment: http://openpli.org/forums/topic/18806-openpli-quick-setup-ubuntudebian/
Basically, it boils down to this:
Run Linux. Most of use use the latest Ubuntu desktop release, I suggest you do the same if you don't know what to pick.
Install prerquisite packages, as described here: http://www.openembedded.org/wiki/OEandYourDistro
For Ubuntu, that's:
sudo apt-get install sed wget cvs subversion git-core \ coreutils unzip texi2html texinfo docbook-utils \ gawk python-pysqlite2 diffstat help2man make gcc build-essential g++ \ desktop-file-utils chrpath
Clone the openpli repository:
git clone git:...
Setup the environment
Build your first image
MACHINE=xxXXXX make image