Here's a few things...
As for forgetting where you've been:
Teleporting should be a trainable ability the same way driving is. How will that help?
Anyone can just get behind the wheel of a car without any training or a license and use the vehicle. But they won't do it correctly, at least not at first. So you get training. There are driving classes at high school and dedicated driving schools.
My point being that in the training you are taught how not to forget the places you've been. Memory shortcuts are connected to specific words, and in that way you think "teleport" and "sand" you always go to the beach. You don't have to specifically remember all the details of the place, you just think "sand" when you're teleporting and appear at that beach you've attached that memory word to. Or to be more specific, you attach a visual with the name of the place and that's all you need to get to that place.
You've basically trained or tricked your mind into a shortcut way to teleporting without having to have all these vast and detailed memories. And we've already kind of done that anyway. Whenever we think of the name of the street that the house we lived in we think of that house. Whenever I think the word Crotona I remember that apartment building I lived in on that street. It's my first thought. That will be your trainable ability.
Teleporting to someplace you've never been:
Extrapolating from the above, instead of using words linkage to go to go to places you've been, how about using photos to go to places you've never been. Training to focus deeply on what the place looks like (and then training to link the picture to a word, like above) you can teleport to that place. The way your teleportation works is that what you really need is the mental image of that place, not actual first hand experience of the place.
Here's an interesting rub then. Unless you have that word/picture, first hand experience of a place, you can't teleport there. I have none of the above of Huntsville, North Dakota so I can't teleport there unless I get that info. This might be a reason why picture books will be very popular in your world. Or better yet, Google Earth!
A method for gaining firsthand experience of places to teleport to:
In Teleportation Training School, Class 101 is just going to all sort of places all over the world. Once you get to a new place you do your mental training exercises to memorize it/link it to a word. And it's your job to do that for the next few months.
Later, your mid term exam is taking the teacher to those places with you successfully.
Traditional mass transportation, or what's left of it:
One thing is that people are absolutely lazy so they won't spend the time and effort to create new transportations modes, or continue to maintain existing ones, if they can teleport anywhere. So public transportation goes away. And only collectors would keep old cars and planes as collectibles for fun.
Maybe transportation of mass amounts of goods might continue if those goods in those mass amounts absolutely needed to get somewhere ASAP. But even then groups of paid teleporters might be able to do the trick. There's your new industry.
There's even a question about something like this:
How can a colony of teleporters make the most money while keeping their teleportation a secret?