describe the effects of reading mania. …

Reading mania had increased the demand for books and which had lead to the increase in demand for the print.

1) New forms of literature appeared in print, targeting new audiences. A children's press was set up in France in 1857 devoted to children alone. The Grimm Brothers collected and compiled traditional folk tales. 
2) Women became both important readers and writers. Penny magazines were specially meant for women. Prominent women novelists were Jane Austen, the Bronte Sisters and George Eliot. Their novel defined a new type of women - a person with will, strength, personality and power to think.
3) Leading libraries in England became instrumental for the middle and lower classes. After shortening of work hours, workers had time for self-improvement and self-expression. They wrote about politics and autobiography.