I have participated in many 'forums' on many subjects over ....... well, just too many years! Anyone else round here remember ARPNET? However, while a old hand on boards, I am relatively new here having joined mid December. Most of the other forums I use are technical (IT mainly) so often have a Newbie section. It's usually a load of posts with best practice and solutions to technical queries that come out of newbies time and time again. It doesn't stop the newbies posting the question, many of which deserve RTFM answers, but it means one can quickly post back the link in response thereby saving typing the same information over and over again.
As this forum progresses, we might find that that we get a similar situation. In that case, it would be worth setting up a Newbie thread. However, up 'til now I've seen no duplication in the questions being asked.
The group here are certainly very friendly, but I don't believe any more or less friendly than most of the other forums I visit. However, there are not many of us ...... Yet!

Of the other boards I frequent, one of the most active is truly international with questions being posted from all over the world; sometimes in different languages. There is usually someone on board who can reply and interpret for the rest of us.
Leg pulling is usually prevalent across all boards as are the occasional insults.

The most fascinating are those with large numbers of Stateside members. Any hint of criticism is often, though by no means always, met with what is termed 'flaming'. Sadly, there are usually a very small number of members who are intent on 'having a go' at every opportunity.

Again, one soon finds out who they are and the best solution seems to be to totally ignore them. The only trouble on really techie boards is that they sometimes hold the clue or the answer to your particular problem.
I haven't really a clue who Martin, Jane, Anne-Marie, Jon, Janice, George or even the lovely Maureen are. One soon gets to know who the key players are and what their sense of humour is like. I detect no bar to anyone joining in the frivolity. I love the humour here.

So if there are any Newbies who feel nervous, don't be. As Janice said just "plunge in". You will be very welcome.
Best wishes ...... Robin