I'd disagree with the 2nd example (iskolába megyek). In this case the emphasis is on the place (iskolába - to school). For example You see a kid with books in his/her hands, and You ask him/her where (s)he is going? (Hova mész?) Or You ask the kid "Are You going to the library?" (Könyvtárba mész?) and the kid answers, No, I'm going to school (Nem, iskolába megyek)
These are short simple sentences, this one doesn't even have an object. The verbs can be anywhere and even come first "van" and all others too.
Van egy tyúkom. - I have a hen.
Reggelente vagyok rosszul. - In the mornings I feel unwell.
The exact rules will be detailed later. One trick we often use is to move something up front to emphasize it. The sentence above does that with mornings. eg.
Egy tyúkom van - I have one hen. (emphasis on one)
Tyúkom van - What I have is a hen. (eg. when being asked do I have a hen or a rooster)