Greetings

Guten Tag, Mr. Manager!
When you are in a formal setting like an office, you’ll want to say guten Tag and auf Wiedersehen. It’s more polite than hallo and bis bald.
Shh! Listen up!
Lots of German words have a silent h. This silent h makes the vowel before it just a little bit longer.
eh
es geht, auf Wiedersehen ​(as in “day”)
oh
Sohn (as in “zone”)