Hola Periodico

I'm having this problem, and can follow the gist of the suggested workaround, but I am not a coder or sysadmin by trade. I am a solo business and now have to get email from an account on my client's exchange email. I don't use Outlook, do use Thunderbird. I would like to implement this, but do not fully understand the solution. But I can follow instructions very well (not a complete noob). Could someone translate these steps into something like: