Why YouTube? If you still have this question on your mind, Youtube team is answering: “A YouTube Video is the fun, powerful, and affordable way to bring your business to the world. Video ads are as effective as TV in building awareness of your business. And they get results -- like an average 20% increase in traffic to your website.“
You can get started with Youtube oficial page or you could visit WikiHow, where you find useful information and Videoduide.
Remember that you need to create / have a Google Account to sign into YouTube. A Google Account gives you access to all Google products (e.g. Gmail, Google Groups, Picasa, Web History, YouTube, and more). You can find more information about it on Youtube support page.
Also, don’t forget about Youtube trailer. Now, with a new layout, you have the opportunity to show who you are and impress people right away with your own trailer. You can find more information about it on Youtube pages and don't miss this articl with tips for your Youtube chanel.