My email provider is closing down in July and I found Thunderbird as an excellent new provider. In a write up, it said it was very easy to add a second, separate account. I wish to do this to keep personal emails separate from work and charity emails. How do I do this, please? (I am elderly, disabled, and not too good when it comes to IT. In other words, help needs to be spelled out in words that I can understand as I have'nt a clue what some of the language, in daily use by people who are familiar with it means. Thank you.