Weird symbols in downloaded ebook text.

I download ebooks using eMule and these come down without the usual
formatting (no margins), but the problem is that the following curious
symbols are scattered about at random in the body of the text. VIS:
’s
“
â€
†“
etc.

Here is a passage with the curious glyphs well represented...

*****
But if you loved herâ€"if you “got†herâ€"you felt like you’d
joined a secret club, with its own code words and special signs and
degrees of initiation. It was a creed, in the words of one writer,
“as ardent as a religion,†and “a real appreciation of Emma,â€
her subtlest book of all, was “the final test of citizenship in her
kingdom.†Rudyard Kipling, very much a citizen himself, celebrated
the phenomenon in “The Janeites,†a story about Austen worship in,
of all places, the trenches of World War I. “Jane?†says
Humberstall, the simple-minded veteran at the heart of the storyâ€"
Why, she was a little old maid ’oo’d written ’alf a dozen books
about a hundred years ago. ’Twasn’t as if there was anythin’ to
them, either. I know. I had to read ’em. They weren’t
adventurous, nor smutty, nor what you’d call even
interestin’â€"all about girls o’ seventeen . . . , not certain
’oom they’d like to marry; an’ their dances an’ card-parties
an’ picnics, and their young blokes goin’ off to London on
’orseback for ’air-cuts an’ shaves. [Which is exactly what Frank
Churchill does in Emma.]
Yet once Humberstall was accepted into the brotherhoodâ€"“it’s a
very select Society, an’ you’ve got to be a Janeite in your
’eartâ€â€"he came to understand her true worth. “I read all her
six books now for pleasure ’tween times in the shop. . . . You take
it from me, Brethren, there’s no one to touch Jane when you’re in
a tight place. Gawd bless ’er, whoever she was.â€*
***
Can anyone explain what these are?