I can’t surely tell which is the best place to create intros/outros, as there’s a large number of websites that offer such services. Some of the services cost more and some less.
If you search on Google trying to find intro makers you will definitely find RenderForest. They offer a large variety of intro templates, which are absolutely easy to use.
There’s no need for animation or video making knowledge. Just look through the intro templates, choose whichever you like the best. For some of the intros you can as well choose its length. Create your intro or logo reveal within 5 minutes by simply adding your logo with a blank background, customize texts and colors and click ‘preview’.