A: Yes, of course. It is always permitted. It might even be advisable in the case of a long and difficult confession, being then most helpful. For a similar reason it is allowed to write down your sins on a piece of paper and read them off in the confessional. But always be sure to destroy the paper afterwards; for confession is a sacred, secret thing.
We would not, however, advise the use of either prayer book or paper or ordinary weekly or monthly confessions. For such it is easy and better, as a rule, to confess by heart, so to speak.