Do you have a favorite website that you visit that is related to a YouTube channel?
If so, what do you like about it?
I my favorite would be: blackhatworld .com
It is mostly about internet marketing but they have a YouTube section.
I use the site mostly to learn SEO and how to gain Traffic for my other projects.
There is a great tutorial buried there explaining how to easily get a transcription and translate it into multiple languages.
Some good information and lots of different techniques. Depending on what kind of channel you want to run. (entertainment, affiliate, PPD, Spam, etc)
Asking and answering questions on Quora to gain targeted traffic is one thing I learned there.