# General Information:

Moses continues to speak to the people of Israel as if they were one man, so all instances of "you" and "your" are singular. 

# You will not take the name of Yahweh

"You will not use the name of Yahweh"

# You will not

See how you translated this in Deuteronomy 5:9.

# in vain

"carelessly" or "without proper respect" or "for wrong purposes"

# Yahweh will not hold him guiltless

"Yahweh will consider him guilty" or "Yahweh will punish him"