Read everything you can on this message board. There's tons of information right from the front lines here. Don't ask a bunch of questions, read and then read some more. I presume your warship has internet and not much to do with downtime. Read, then read some more. When I started 17 years ago, this board was just getting started but I still learned more real life stuff here than anyplace else. Let what you find here guide you in further studies. This place can teach you what questions to research. Take the harder road and find it yourself instead of just asking someone else to tell you the answer. You'll remember it much better when you find it yourself, though it's more about learning how to find the answer. for yourself.
Study for and pass the NHIE. That's the first BIG step.
After that, hook up with a multi-inspector firm in California. Gets you some real life experience.
After you've got the inspection basics down, start studying marketing. It doesn't matter how good of an inspector you are if you can't make the phone ring. Even the best inspector in the world is going out of business if they can't make the phone ring.
Talk with Mike Brown about doing a website for you. He can best advise you when to start on that.
Save up some money. It'll be awhile before you start making a living at it. The better prepared for that, the better off you'll be.