Hi Don!
I think your question is quite open. I mean that it depends on where do you live (there are regions with a huge demand on Liferay and other where it's completely unknown) and what do you do for a living.
If you are a developer, you should definitely focus on the development course, because it is the most usual profile that the companies are looking for.
Anyway, if you are not a developer, Portal Admin course will give you the hability to manage a portal, and it'll be useful if you find a job as a system administrator in a company that uses Liferay. In most of the companies I've been working with there are system adminstrators that learnt about Liferay "on the fly", so that would be an advantage if you have knowledge or experience with Liferay.
Finally, why don't you search job offers in the internet with "Liferay" or "Liferay Administrator" as a key word? I think we can learn about this "market research"
Greetings and good luck
Juan Fernández
