This site is a great site to find plenty of anime that is free!! I do not know if they provide download service (probably not) but they do, do streaming.... and all stuff is rated depending on the content of the anime...
There is no Hentai related stuff on this website
This is one the Many Sites where you can get to see Japanese Animation in English Dubbed or Subbed. It cool!!!!
Nothing to worry over her, Just don't Click on the Ads on this Page, It can Redirect you to some Unwanted pages (Not Sexual).
My personal favourite website to watch free anime on. It has the largest selection I have found, with the least advertisements/pop-ups. If you get a pop-up, close it right away (if you have a decent adblock and/or pop-up blocker you should be fine). There are a lot of animes that aren't for children under 13, but there are still child friendly animes and movies such as "Spirited Away."