video help please

could someone point me in the direction of a good but free site for doing a intro video as im soon going to start some projects on my youtube channel(which by the way i have had for 3years and not once uploaded a video). i just need to be able to make it look and know that i did it also i need a few backgrounds for either streaming or for my twitch account as well so that if stream off there then i have something people can see.

if you know of a good site let me know please or if you are willing to help then i am thankful for the help