If you lack experience because you can't explain bitcoin then I think you should read an article and this should be given to your friend so that he learns more so you don't need to bother explaining it from the basics because we see now it's practical if we search on Internet.
Of course if your friend joins this forum when someone wants to be asked here, surely many will answer it, at least he can interact with the discussion and maybe he will understand more quickly if he really has to do it.
Here there are many articles available that present beginners who come.
However, these things are only applicable to such friends or people who are really interested to earn some profits and start their cryptocurrency journey even if they start with Bitcoin or some other altcoins because if they aren't serious to it, joining the forum and reading some article about crypto will be gibberish to them. I believe our sole job is to plant those seeds to their brain that there's indeed an asset and investment for the future and let them do the next step as long as you provided all what's needed for them to start.
Of course they have to be patient in the journey at the beginning and have to read more often in the articles that are presented which they think are useful along the way starting from bitcoin or altcoins it doesn't matter but he has to have the courage to do this, it is certain that at the beginning they will lose because they don't know the real pattern but from that experience they will get up and start more to be able to choose bitcoin.
But there are lazy people who only see other people's success from crypto seeing their success but don't see it from the risk side, so these people don't want to be responsible and well, usually they will just be bullshit.
For those beginners, take as much knowledge as possible in the world of crypto, don't want to achieve success at the beginning because it may not require a process, but when you already know all the knowledge learned so far you will be successful and be able to choose future assets.