New Client with Accountant/Xero

Hello all,
I am a newbie and have just signed a client who is self employed. Client has an accountant who is very interested and wants to work closely with me on this project as well as potentially others.

The accountant is using Xero to track spending. Anyone using that and have tips for me?

I feel both equipped and overwhelmed right now. If anyone has advice I’d love to hear it. I know my stuff, but this is a big career change.

Thanks