Friend needs advice on managing a tech team (and new hires)

I’m posting for a friend who’s too shy to ask herself. Here’s the situation she just got promoted to manage a tech team, but she’s seriously nervous because she might’ve lied about her experience with managing people on her resume… and now she’s feeling out of her depth.

She’s great with the tech side, but things like onboarding new hires, setting team priorities, and keeping everyone motivated are totally new to her. She’s especially worried about making the new people feel welcome without coming off as clueless. She keeps asking me if there are some quick wins for building trust or any common mistakes that might give her away as a newbie.

If you’ve got tips on easing into a leadership role when you don’t have a ton of experience with the people side, Any advice, big or small, would be super appreciated. Thanks.