A couple of questions you'll need to answer before you can begin.
What is your purchase budget. You can range anywhere between low $20k to high $50k range depending on model and options.
Will this be your daily driver or an addition to your fleet.
Do you need the unlimited (4 door) or not? Kids, young, old?
What part of the country do you reside? Forest/Service road trailing, mudding, rock crawling are all very different beasts and require different setups.
Knowing nothing except that you mention you'd like to develop this as a hobby (you don't even know if you'll like it), I'd recommend that you start reading up on this forum and start test driving Jeeps regularly. There are a lot of former Jeep owners that thought this was the ride for them only to learn (expensively) that too many of the creature comforts and technology benefits that are standard on other vehicles aren't even options on a Wrangler. Things like Homelink, etc.
Read up here, do your homework and get some seat time with dealerships. Read up on gear ratios so that you choose right. Think about what top(s) you want.
Read up on the forum (many others have asked this same question in the past), fill in some of the blanks above, and I'm sure you'll have more info than you'll want. Most importantly, make sure that a Jeep is what you'll be happy with and will accommodate your lifestyle before signing the dotted line.