Which one should I do if I like to promote a product of mine? Press Release or Paid Advertising?

Is it really necessary to hire a Copy Editor? I mean if I have a small in a small niche and not have much budget for it.

I am seeing huge fluctuations in Google SERP's from 10/8/15. I don't know whether it is any update or new algorithm. Even the mozcast are also presenting various temperature changes. Is anybody aware of it?

What are the best link building strategies of 2015?

What are the best keyword suggestion tools apart from Google Keyword planners or wordstream? A tool that will help me generate keyword ideas with my provided keyword as base.

I had built sites for my affiliate products. Which are best sources to get traffic to them? so that can turn into sales.

Which CPA network should I choose for North American traffic? The traffic is mainly from Canada.

I am little bit confused right now. I am starting a new online business which provides special services for physically disabled people. In order to promote it I want PPC but don't know which network to choose. Any recommendations?

Google is saying that the slow panda roll out is not to confuse webmasters. Give your opinions.

I have a site and I want to sell some of the products which I have already used as an affiliate. Is it wise to build pages from free hosting such wordpress or blogspot, or can I build separate sites with paid hosting to promote and sale my products.