What advice does the "fairy" give Jane to her situation?

From the text:

A kind fairy, in my absence, had surely dropped the required suggestion on my pillow; for as I lay down, it came quietly and naturally to my mind.--"Those who want situations advertise; you must advertise in the -shire Herald."

"How? I know nothing about advertising."

Replies rose smooth and prompt now:-

"You must enclose the advertisement and the money to pay for it under a cover directed to the editor of the Herald; you must put it, the first opportunity you have, into the post at Lowton; answers must be addressed to J.E., at the post-office there; you can go and inquire in about a week after you send your letter, if any are come, and act accordingly."

gkof;gf