It seems HTML5 can be used instead of Flash Player? Before I start downloading HTML5, is there anything I should know about it? Is it safe to use? Is it safe to download? I had a bad experience with Flash Player and am now skittish. But I like to take courses at UDEMY and they apparently only have those two options to view them with.
Has anyone used HTML5? Can I expect a lot of crap attached to it when it downloads?