as to plugins
youtube is using flash and javascript
you might want to have a look at Mjmwired's page
http://www.mjmwired.net/resources/mjm-fedora-f17.html
however unlike internet explorer on windows Firefox will NOT auto run java-script by default( it is a major security risk)
YOU have to turn it on
in firefox
edit/ preferences/content
and put a check in "enable java-script"
also if you have "no-script" installed you need to allow that site
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from your post it is looking like you WANT a MS windows "point and click" clone
fedora will NEVER be that
so if you ARE looking for a point and click FREE copy of windows 7
fedora IS NOT THAT
buy windows7 business ( win7 home SUCKS,it is missing a lot of needed things )
now fedora is a "special case" operating system
It is a VERY FAST passed
"Research and Development" operating system
to use a car( automotive) analogy
If you WANT ( and a do mean WANT) to get your hands dirty and rebuild an engine ,change your own oil and hydraulic fluid
replace your transmission
change your own breaks
and so on
if you WANT to learn HOW a computer works and HOW to fix it then fedora IS A GOOD choice
fedora is a testing R & D OS and as such is using the newest of the new
often SO new that sometimes , no one yet supports some things in fedora .