Errata

There is a typo at the end of the line:

[...] work on the iPod touch and on ithe Phone, and [...]

shoulb be:

[...] work on the iPod touch and on the iPhone, and [...]

Greetings,
Christian P.

You should uniform the value of the <meta charset="UTF-8" /> tag.
Sometimes you write in lowecase, and sometimes in uppercase:
<meta charset="utf-8" />
<meta charset="UTF-8" />

Although the W3C declares that the value is case-insensitive:
http://www.w3.org/TR/html-markup/meta.charset.html

You could prefer the uppercase version:
http://blog.codingoutloud.com/2009/04/08/is-utf-8-case-sensitive-in-xml-declaration/

Thanks.

There are 2 spaces between "viewport" and <meta>.

the second <section> tag should be closing </section> tag

'of the <detail> element.'

should be '<details>'

an extra quote

Name: <input name="name" required"/>

there should be a white space between 'rquired' and 'list'

pros of cons

or "pros and cons"?

"media type and the code"

should be

media type and the codec

the paragraph beginning with "HTML5 <audio> and <video> ..."

is totally the same with

the 5th paragraph of page 150

The text:
"the type is assumed to be test/css"
should be
"the type is assumed to be text/css"

a missing of the closing curly bracket

'myobj' should be mqobj

include the ID value preceeded with a period?

ID should be class

include the class name...

should be

include the ID value

the content of this paragraph is corrupt with the previous paragraph

third <li>, change fr to es, right?

touchStart should be little case: touchstart

and last 3rd paragraph:

the second comment should be 'active', not 'hover'

vm?

should be vw