This varies from person to person. Sometimes people can do one session and never grow back hair, whereas others may continue these sessions but still have to do it. It definitely reduces hair growth, but it will not always be a permanent solution.
The eBook reading option isn't a feature of the Goodreads website at this time. It is only available on the mobile apps. You can mark them as want to read,...
I would seek the advice of a doctor. Were you wearing your tailbone pad while you were playing? A lot of athletes these days don't wear a girdle while playing...
No. Do use a pen or any other writing utensil. If you want to go this route, I suppose you could use a VERY well-cleaned screwdriver, large nail, awl, etc.,...