It's great to hear that you're starting a LEGO-focused YouTube channel! As for promoting it on Eurobricks, here's some info:
You can check the site's rules or contact the moderators to see if it's allowed to include a link to your YouTube channel in your signature. Rules can vary, so it's best to clarify.
Posting set review topics with a link to your YouTube video is generally acceptable, but it's a good idea to provide some brief background or overview information about the set to add value for the community.
And if you're looking to boost your YouTube views, you can explore options like getting LINK REMOVED from reputable sources.
Best of luck with your YouTube channel!