questions.....4

When I use the Book : What Are Old Folk Good For Anyway? What exp boost does it give based on my knowledge its normal leveling exp gym exp and CE is that all or...does it affect my racing skills as well? If there is any other exp i missed pls let me know
Thanks.

Should be only for leveling exp. Look at Baldr's explanation here:

https://www.torn.com/forums.php#/p=threads&f=3&t=16158934&b=0&a=0&start=0&to=20300960

thanks