[Tsuwabuki]

What Grammar Girl fails to mention is the difference between mechanics and style.

Prepositions in most compositions do not need need to be placed at the end of sentences. Although questions are asked in in compositions, especially at the college level, they are usually broad and never questions like "what did you step on?" This is why your JHS and HS English teachers (ME) hammer home the idea. Rules are made to be broken, but you need to understand where and when you can break them by learning mechanics before you attempt style.

In Texas we use learnt (more often burnt as an example of ed vs. t for past tense conjugations).

I recommend you learn Japanese grammar first, THEN learn vocab to plug in.