Access YouTube via the link youtube.com
Click on the button LOGIN.
If you don't have an email @GMAIL of your company, then click on the button CREATE AN ACCOUNT and register
If you already have one, enter your email, click NEXT, then enter your password.
Click on your email avatar icon in the top bar on the right side.
A box will open with several options. select option MY CHANNEL.
Ready! You are already on your channel. Now just customize the way you want and upload your videos.