Looking into the Army Rangers after my Navy enlistment. Any words of wisdom?

Could be tough going from Navy to Army. As I recall when I was a recruiter just a short time ago, the Army only accepts prior service applicants that have specific specialties, I.E. airborne, and select MOS's. I would certainly speak with a recruiter before you exit the Navy to ensure you have a job waiting for you. And don't let the recruiter blow smoke up your ass, speak directly with the Center Commander.

Ensure that you get the guarantee of RANGER batt. You'll have to pass a pre-PT test, but that's how you'll know it's been guaranteed. You will get: Basic training, AIT, & jump school in your contract. Provided all goes well, the fun will begin. You won't get slotted for a RANGER school slot until you make E-4, but they will give you the best chances of passing, so you can put your tab above your scroll.

I had a guy here at 5th RANGER Training Battalion who was prior Navy. He was great at his job and I'd work with him again. Had another guy who was prior Navy up in AK. He could do the job decently but never quit made the switch mentally. He wasn't a top performer because of this and he was just regular infantry. You are trying to enter into a completely different world. We are all agrees I've type A personalities that require your best every single day. If you are trying to go to Ranger Regiment you will go to Ranger Assesment and Selection Program. If you are e5 or below you will go RASP 1. It's 6 weeks long and you will have combatives and combat lifesaver which will go anywhere in the Army. You will also have some great shooting instruction. Better grab a rucksack and start walking, also off duty wear sandals to help your feet toughen up. Good luck.