Translation of Japanerin

Hello, I am John, I'm 29 years old, I have lived in Heidelberg all my life, I have a son and I am working at Lenzemanner in the South of Germany since 1980. I look forward to hearing from you.
Maybe we would need to say install our dictionary as a software? But I would say instead of install, use our dictionary as a software. So bottom line. If I use the singular form for newsletters and websites, I am on the safe side for both?
I am in my German lesson and I'm learning about the subjunctive. I had never heard about it before. Can you ever deal with all Verb conjugations? I just totally misunderstand the past tense!