[ILUG-BOM] embedded systems linux(help needed)

I am linux enthusiast but was restricted upto application software..But after attending the workshop on embedded systems -Beagle Board workshop, I have started thinking to move forward in this direction because I think that it will be the major market in the next 5 years or so..

So, any one please shed some light on how to start development for any embedded system or emb. system running Linux.... What and where to study and which embedded system tech. to take up....like beagle board or mobile devices etc etc.....

I know googling is one of the way to find out things...But to take advice of experts and professionals is always a best option..

Please help me with it...

Regards,

PRATIK ANAND