Daniela teaches Italian in a classroom, complete with blackboard, chalk, eraser, and students. Her lessons are very popular and people love her spontaneity and teaching style. She addresses grammatical topics one by one, geared to both beginning and intermediate level students.
There is a certain kind of subordinate clause, called a "clause of purpose," that basically answers the question, "to what end?" Italian has a number of conjunctions that can be translated as "so that," and they take the subjunctive in most cases. So this kind of subordinate clause can be tricky.
Don't be scared off by fancy names of clauses and parts of speech. Daniela is just showing us different ways of saying the same thing, but sometimes one way is clearer than the other, especially when the subject changes from main to subordinate clause.