Whats the best way of promote affiliate link on youtube

It depends. If you want people to click on your link you should encourage them in the video to do so. (if you have watched =3 in the past you can say that Ray is saying something like "click on the links bellow" at the end of each video)
Another great way to increase your CTR is to add annotations in the videos. (you can say click here for more information and show the link on the video)

 

I suggest you to use Annotations for directing visitors to click on the link in description, I recommend you to use a landing page and drive visitors from YT to your landing page.

Regards
IndeXer

 

asked viewers to click our affiliate link on description + send them to landing page + collect leads = make $$$$

 

Try to change it up a bit. How about placing a small annotation during the video, or at the beginning, see how that works, maybe your CTR will increase.
The secret in this field is to experiment until you find the best recipe.

 

Place the annotation in the beginning of the video, most of the visitors doesn't actually watch full video. If not then direct your visitors to the landing page. Record your landing page too in the video & focus on the URL, that way without directing them to description you can directly refer them to visit your landing page.

Regards
IndeXer

 

Make it blatantly obvious what you want the viewer to do (i.e. click on a link, etc.). Explicitly mention in the video what you want the viewer to do, use annotations to help your in-video instructions, and include the link in the description as a final kicker.

As far as your view count, nobody can predict how many views you're going to get. Use the video tags and other social sites to your advantage.

 

I usually display the affiliate link on the video itself like a watermark and a big affiliate link on the credits. just make sure that your money site or affiliate link will never change.

 

I agree with Indexer, use the annotations tool to your advantage. I have found that placing the link first or close to first in the description makes it super easy for your viewers to find it.

 

Youtube Cards and Youtube Advanced Settings for the win.