Warm welcome to the forums @bsokowoski. Awesome to have you here. Really happy to know that you also got back because of your son. It is a great way to bond.
Just as reference, a fellow user has made and shared thier tracking tool. It is optimized for species collectors but I am certain some aspects can cross over to master sets. You can use it as reference.
Also, we have quite a few collectors from Spain on the forum. Hopefully you can connect with them and be a part of that community as well. Have a fun time on the forums.
Cheers!