This lesson combines two ideas you'll use daily: giving a command or advice (the Imperativ), and correctly ordering the parts of a German sentence.
Start with the command form. German changes the command depending on who you're addressing, but the choice depends on formality and number, not gender. With a friend you address as du, drop the pronoun and usually use the bare verb stem: Komm! ("Come!"). With a group you address as ihr, add -t: Kommt! With someone you address formally as Sie — a stranger, a shopkeeper, a doctor — put the verb before the pronoun: Kommen Sie! Notice the verb comes first here, an exception to the usual second-position rule, simply because commands naturally start with the action itself.
For ordinary statements, the golden rule is: the conjugated verb always sits in second position, no matter what comes before it. After the verb, the natural order is time, then manner, then place (TeKaMoLo: temporal-kausal-modal-lokal). So you say Ich fahre morgen mit dem Zug nach Berlin: subject, verb second, then "tomorrow" (time), "by train" (manner), "to Berlin" (place).
With weil ("because"), the rule flips: the conjugated verb flees to the end of the subordinate clause instead of staying second. So you say Ich lerne Deutsch, weil ich in Deutschland arbeite — arbeite lands at the very end, not right after ich as you might expect. A very common mistake is forgetting this shift and writing weil ich arbeite in Deutschland as if it were a normal main clause, instead of the correct weil ich in Deutschland arbeite.