Dachshund lover here!
I LOVE them...but I wouldn't recommend them for a first time dog owner. You need to really educate yourself about the breed and figure out if dachshunds are good fit for you. And you seem to be doing that, so

!
Dachshunds are hounds, and act a lot like terriers too. This means they love to follow their noses, love to dig, and can be stubborn and difficult for the inexperienced to train. Some are difficult to get housebroken. Some dachshunds also get the infamous 'hound smell'. I've noticed this more frequently on the short haired variety and less on the long and wire coat kinds.
They're not usually a good breed for families with small children. They can be easily injured by children who aren't old enough to understand how to properly handle the dog. They also are prone to snap when annoyed...not to say they're vicious by any means...but whereas a lab will try to just walk away or just put up with rough handling, a dachshund is more prone to snap a warning of 'hey you're hurting me!".
Dachshunds are not little froo-froo pets like a Maltese or a Yorkie. They are small, but they're from the hound group and were bred to be tenacious little vermin hunters....not purely companion dogs. Although, they do a good job at both ends of the spectrum! Two of the dachshunds in my family are the best snugglers ever, but they will still run out the door after a squirrel and there is no grabbing their attention until the squirrel is loooooong gone.
Doxies are obviously prone to back issues, so you have to careful not to minimize jumping on or off things so they don't hurt themselves. Their teeth get tartar buildup faster than other breeds, so you need to brush their teeth and might need to have dentals done more often.
That's all I can think of for now....so it's time to share some photos of the doxies that have been in my life over the years!
These are Wire Haired Dachshunds:
Smooth Coats:
More Wire Haired:
A Wire, a Smooth, and....wait a minute! That's no Dachshund!