there is no set answer. a slow and steady increase over time is the way to look really good to Google. this shows that your site has interesting content and that other people like it (by linking to your content)

if you are using a blog, its important to keep in mind that the ideal situation is for each of your posts to continue to get backlinks over time, not just the new posts.

another thing to keep in mind is that the development of backlinks should appear to increase naturally, through a variety of sources. getting 100 per week isn’t really needed. you can get yourself on page 1 with very little work. following up that work with a slow and steady increase of backlinks will keep you on the first page for most of the time.

have a look at
http://www.thirtydaychallenge.com

this is a free online course about developing an online business. it is completely free and they don’t try to sell you anything. it is starting tomorrow. the course is geared toward complete beginners but has useful information for people of all skill levels.

You may also want to look at
http://tr.im/mrktcrs
this is another course I used to help build traffic to my own site. the best part of this course is the viral twist at the end. it only takes about 15 minutes to read through. Also interesting, this course teaches techniques that do not require any ranking on any search engines

hope this helps
References :
http://www.thirtydaychallenge.com
http://tr.im/mrktcrs