I think its something you learn over time. If you do this business for at least 18months you'll know how many links over how much time you'll need for a keyword that has a certain amount of competition. Also take notes, don't buy those horrible forum links and put together a proper traffic strategy..
Anywhere from 10 to 10,000. There's no right or wrong amount of linkbuilding, just do it naturally, and you'll see the results.
There is not defined number of backlinks, as long as they are appearing natural to the search engine... You can build as many as you want, but make sure all the backlinks are relevant to your website and they are coming from reputed websites. Google consider quality more than quantity so quality should be your first priority.
Dont look after to the number of links per week. What i can suggest to you is to be consistent in quality and quantity of backlinks. Somehow, try to consider the domain age of your website it really matters. If your site was publish a month ago, it is important to monitor your backlinks quantity or else Google will penalize your website. Be patient.. Goodluck!
You dont need to worry about the numbers, quality is the point. Backlinks are really vital for boosting the rank in SERPs but I think those backlinks which come from the relevant sites have a much benefit, so always go for a backlinks which comes from quality sites and the most important thing which is good in Google's Eye. Search engines want websites to have a level playing field, and look for natural links built slowly over time.
If you want to rank high in the search engines "SEOBook" suggests 2 then 4 then 8, 16, 32........... Websites that seem to be growing in popularity will be given better rankings than static sites as they should have more relevant information for the viewer today.
Yes you can not predict how many backlink are really required , My suggestion is just keep adding 20-35 link on daily basis at least for 6 months. Hopefull you will see great results...
Read this first: Smart and Safe Backlinks Building Advises. Actually it’s important not how many backlinks per day you add, but instead how many of them are getting indexed how fast. You could add 1000 backlink a day and none of them gets indexed nothing will happen. Add a thousand and ping them all you probably get sandboxed / banned. Build up a pace, start with 10-20 backlinks per day, then just stick with that for a week, then build 15-25 backclinks per day, then next week move up another 5/10 whatever suites you, stable backlink increases are the best way to avoid being sandboxed. Quality of the backlinks is the point, not the number!