Explaining how ranks work,yes! and not give too quick access to the rank system, by a self declaration to be a beginner from the start (instead of the beginner self determining his rank). OGS then will give the correct first ranking.
That’s what a beginner is looking for, not to rank up by playing as a 12 (or 6?) kyu. I hope he can get it asap by some rethinking of the welcoming of beginners.
Side note: after being rejected by 1k bot, this beginner will be rejected by beginner level bots because his rank will be… too high!