Newbies need to hear a lot from the ones that did a lot of mistakes in the past and also to the one that have profited from holding BTC and are still holding in the present. Because hearing mistakes of the others will direct them to doing the right decisions of investing in the market and that's through holding BTC first. Everyone is free to hold any altcoin that they want but hoping that these guys won't commit the same mistake as I did in the past for selling too early.
I do think that newbies need just to find the right people to listen, apply what they will get from it and follow the lead, and if they are determined enough, everything will be fine for them.
While it is not a requirement but it will be helpful to them to listen to the past experiences of everyone so that they can avoid the mistakes that were done by these people. It's okay if they will not hear it from someone and they will have their own, there's really no problem at all with this kind of matter but I think if someone they have asked for are happily sharing his experiences about the market through holding both bitcoin and some altcoins.
That will be impactful to the newbie because that guy will understand what he must do so that he won't be ending up with the same mistake. It's actually not paid at all to listen to someone and don't get into people that are asking for payments for their words of wisdom. Actually, in the forum there are a lot of good people here, traders and investors that are happily giving tips to the newbies.
But, it is up to the newbies if they're going to give themselves the time to listen to it. They have nothing to lose upon listening and looking for the right people to give them tips but as you've said, it's not a requirement at all because even I, I didn't have any mentor but the community helped a lot with the tips that I've read in the past and so as my experiences.