Welcome Radway and enjoy. Posts here are mostly about individual comics on the site. Check out the 'Reading Group' to get an idea. we don't set out to discuss 'Adult' themes [You are correct] but where it's relevant to a particular comic the range is pretty wide.[No language, tho.]
We are a pretty friendly group, the disagreements (when there are any) are pretty mild and polite and we like to keep it that way.
Most of what is on here is pre-1960's and all legal downloads as far as possible. There are a few early Silver Age [Charlton and Tower Comics - Thunder Agents] and some Silver Age fanzines.
If you are familiar with Silver Age artists and creators you will find a lot of the early work of some of them [like Kirby, Wood, Frazetta, Ditko to name a few.] and you will find work by people you have never heard of which is good enough to blow you away. If you are not aware of this stuff, you have some pleasant surprises in store. So, jump in and start exploring.
Cheers!