CoolestSpot
Banned
I checked out this superboy character in Wikipedia, read the first couple paragraphs and still have no idea who this person is or how he connects to Superman, exactly. For that matter, who is Superman, even. There are two or something? And people say Marvel is confusing.
In the most basic summary, Superboy is clone of Superman and various other people (he has some Lex in him as well) as part of a project to recreate Supes. He doesn't have all the same powers, but basically a skillset that's good enough at replicating it.
The two Superman thing is a bit more complicated, with Post-Crisis and 52 Superman being two Superman from different times in DC's universe after line wide reboots. They made it easier to follow after a not so easy to follow storyline in which they basically were explained as "two halves of a fractured multiverse" and "became one" as DC's way of having it's cake and eating it too. Now, there is one Superman with a combined history of the two, so they can take the best stories and concepts from each of the timelines and mix them.
This is all off the top of my head/memory, and I'm trying to simplify it a bit. Others can probably explain it better.