Building Tier links
hi gsa ser experts,
1. I have a question about Tier link building. I would like to now if i have to wait for example until Tier 1 finished linking than start with Tier 2 and so one, or can i start for example when Tier 1 has more than 500 verified links and to start with Tier 2...?
2. Im creating more contextual links to rank youtube videos, how many links are enough for Tier 1 and Tier 2 please?
Many thanks in advance for responses.