I have a Question....

For those of you out there who know a lot more than me.....(OK so that might be ALL of you..lol), can you use You Tube 'privately'? In other words, can you upload a video clip to use on here, that "every man and his blog" can't use/post elsewhere? I'd love to (maybe) be able to post video clips, (if I could figure out how to do it....con my sister into doing it....she really is the best...(maybe that'll work...lol)) on here of small stuff that goes on around here.... So tell me how do I do it, and is it safe? Also does anyone know how to make pictures 'safe' from abuse on the internet? I am thinking about doing a separate, password-needed, blog for the majority of my pictures....? But I don't know yet...we'll see! (BTW, I did find HTML for Dummies at the library...now I need the time to read it....don't see it happening! LOL)