I just totally don't get it...
Well, first, be aware that a sonnet is a particular poetic form, one that uses a set meter and rhyme scheme (which scheme depends on the type of sonnet). To make a poem fit such a strict form, poets may invert ordinary grammatical forms, and most good poets will not turn each line into a clause, as you do in your second post. If you try and read poems as if each line were a clause, you won't get very far. Instead, try writing some sonnets out in prose form, so that you lose the line breaks. Then read them, and try to make sense of them.