Replacing hoses isn't really that big of a deal. Besides, its good to get comfortable with the basics of your gear so you can feel confident fixing any problems that might occur...or recognizing when you shouldn't be fixing it.
You don't need a torque wrench to tighten the hoses. Just finger tight and then a small turn (maybe 1/4) to snug it up. There's an o-ring at the end of the tread and you want that to make a seal. Overtighting might crush or pinch the o-ring defeating its purpose. Get familiar with it. If you have a leak due to an o-ring, you'll be able to take the hose off, put a new o-ring on and go on you're way. If you have a break in a hose, you can buy a new one and put it on yourself. Don't wait until you have a problem to decide and experiment with your gear. I'm not talking repairing your reg here, just connecting hoses. When you do remove a hose, make sure you keep dirt/water/etc away from the opening in the first stage where it was threaded.