If you're hopping on a server as a newer player you should be reading the rules as you come into contact with the scenario or you should not commit acts until you know the rules on something. When I started I had my friend who had been on the server a bit talk me through what I could and couldn't do.
None of our rules are particularly unforgiving on new players. If you're building a base, you should read the building rules, if you want to go raiding, read the raiding rules. Every server has different NLR rules so you should just read them anyway but overall, a general knowledge of DarkRP would carry you hear through your first couple of hours.
We should be forgiving on new players as staff anyway.