How to study is main question.
Answer is easy. Did you notice that sometimes in somewhere you work very good but in some place you can not work whether how many time you try over and over again.
Here are the needs.
Light! Change your room lights from white to yellow! Reason, it worked over me, before it was white, I bought extra small yellow light many places I placed in my room it changed my result.
Music! Either classic or jazz woold work. Key is no lyrics, just music of entsruments or whatever they are. In New York you can open 90.00 or 105,9 for Jazz and Classic music. Reason, they worked over me.
Last but not least, in U.S.A. which is one of the reason they are very succesfull is I guess you can take up to 75 books from m library. If you are late on returning them you can extend days online of your return. Take 3 or more books from library start reading everyday 1 book!