It depends on what you want to do. While the APPIC directory is a good place to look, tons of opportunities get emailed out on listservs (e.g., APA division 38 - health psychology continues to have a near constant stream), some professional organizations also have postings. More still get posted on job boards for universities, hospitals, and regular job recruitment websites. Ask around and use your connections.
Now, the bit about where you want to be. Not all states require post-doc supervision hours -- my last count was 12 that did not -- you generally have to have a certain amount of hours and though there are some rules about when/how you accrued them, there is flexibility as to when you accrued them. I suspect that it is easier to get jobs in these states than those that require a post-doc hours for licensure. That said, the VA where I completed internship often hired fresh-out-of-internship grads and provided them with the necessary supervision.
Another not uncommon route is applying for licensure in one of these states and then applying to jobs at VAs (or DoD) nationally as you only need to be licensed in any state. Admittedly, this is tough to do if you do not have connections at the VA at which you want to work -- you'll be competing with those who did complete post-docs.
As for me, I went straight into academia, so my time after is not referred to as post-doc, but different roles in different places probably do depending on the local laws (each state has rules for what you call people and when). As I mentioned, my state doesn't require post-doc supervision, so I studied for the EPPP and was fully licensed within 6 months of graduation. I chose this route over a post-doc because I spent a really long time in grad school (7 years including internship) by the time it was over I could not stomach another year of being a trainee AND I wanted to move on with my life financially. I also chose to forego postdoc because I got a tenure track offer in commutable distance from my home. I didn't want to roll the dice, take a post-doc, and hope I'd be just as lucky the following year. If we ever move to another state and I need post-doc hours, I'll figure it out when I get there. This is the biggest con of foregoing post-doc that I can think of. Anyway, all of this is to say its so dependent upon your personal life circumstances -- where you are, where you want to be, what you want to do, etc. For me, a tenure-track offer in hand, double the salary when accounting for 9 month contract, and state laws that allowed me to get licensed without a post-doc far outweighed the risks of perhaps being less competitive for clinical jobs in the future and reduced portability of my license. For other friends a post-doc was clearly the best (or only acceptable) route for their goals.
Congrats on matching and best of luck.
