Unblock plugins so I can view youtubs etc

Help me unblock plugins so I can view youtube

You have not helped me

Don't you understand: You have not helped me so far!

Yes Yes Yes Help me unblock plugins

Thanks for Eric Root for his reply. I ended up going to the Apple Store where David helped me. I was just one click away from the right response! But he was very nice and also helped me a bit with my new Epson printer, since there is no tech help store around NY for Epson. That is disappointing, but I was able to set it up in the end. Again, thanks, eric!