Flash installation instructions. Written for a Samsung, but the install procedures are the same.
I don't recall if the latest stock browser supports adding flash or not. Boat Browser, Naked Browser will.
You can install multiple browsers and then pop between them by sharing the page, you have to install a little helper called Choose Browser for that.
Sites like CNN or places with AOL videos are often a crapshoot and you may have to try a few browsers to get them to work. A lot of the web is about media and yet most media sites (news outlets, local or national for me) have zero clues about putting together working, effective web sites.