This question is being asked very often and raises lots of confusions.
Back links profile can be specified with the following characteristics: velocity, diversity, quality & quantity. I always suggest not to concentrate on the velocity.
Instead aim to get quality links and try to build a diversified portfolio of them. To achieve this use multiple sources, like:
- guest blog posts
- social bookmarks
- social sites
- web 2.0 properties
There are many link building techniques, develop your own strategy, follow it and measure results.
Build as many links as you can, but do not use any automated tools for such a fresh domain.
Hope it helps!