Most of what you find are not really different.
We can picture the deep web as a globe. With a Core, mantle and crust. Everything has a price and everything has a "Need To Know Basis."
The thing about the deep web is it is much like humanity itself. Not really good and not really bad, but very Self-Serving.
The crust, here is your starting point. Populated primarily by the Pirates. If I may say it: Wannabes.
Here is where you will find those trying to sell illicit goods or weasel, barter and double-deal.
They are the first ones you encounter if you were to 'dig' into the deep web. They are the guardians, the gate-keepers. Not out of any noble sense of duty - but because it is self-serving to do so. Their actions often indirectly and inadvertently protect the borders. No one stops this, because it would not be self-serving to do so. For the average person, there really is nothing of interest here. The average person is not trying to buy 50 crates of automatic firepower from a person that does not actually have them to provide in the first place and is trying to steal some bitcoin.
For a while, the deeper you go, the more innocent it gets.
As you get into the mantle, you begin burrowing through the Information realm. Here you will find your journalists. You will find your FBI and CIA. You will find your University students. This is a casual environment, generally used to exchange specified information. And again, very little of interest to the average person. You are not likely to go in there and want to trade for information on superconducting ceramics. Even so, you will still not find anyone here willing to help you in any way, because it is not self-serving to do so.
Introducing a trade often involves giving free information in order to "prove" your reliability as a source. The other party will shake you down for as much as they can get for free, continuing to pursue the notion of checking your reliability.
This... is negotiation. Not fun. Not romantic. Not exciting.
Knowing who to talk to and where to go is based on code. If you are wondering how to get those codes, to know what to say to who- you are on a need to know basis. And no on will help you because it is not self-serving to do so.
But if you did have them: You would be phenomenally bored. The internet you use is much more interesting with much more information relevant to you. Going into the deep web has its purposes. It's not necessarily good or bad... just not relevant to most people. Much of it is about scientific inquiry, where you do not want your findings released or known just yet. Not until the evidence is sorted, the thesis written and you are ready to present your case and claim credit for your work. Until then, the deep web is the best way to exchange information between Universities.
Then you have your members of society... That for one reason or another... Cannot mingle normally. Perhaps they are very famous and in movies. Perhaps they are infamous. Perhaps they suffered a tragic accident involving fire. But for them, they have a place they can converse, communicate, exchange information and be, at least someplace... Normal. The concept is interesting, but the conversations are no more so than anything else on the web. And for this reason, no one is going to help you, because it would not be self-serving and you are on a need to know basis.
Going into the core is going leet and this post is long enough. Let's just say... Not for the timid.
I can promise you that you have encountered many people that utilize the resources in the deep web and in the dark web. But you are on a need to know basis. I can also promise you that the vast majority of them are not hackers (Common usage).
If it is hacking that interests you, we can cover the basics:
Hacking 101
First lesson:
You are on a need to know basis.
Telling you anything would not be self-serving.