Forum Moderators: mack
Don't participate in link schemes designed to increase your site's ranking or PageRank. In particular, avoid links to web spammers or "bad neighborhoods" on the web as your own ranking may be affected adversely by those links.
What you've described seems to be one of those "link schemes" to a "bad neighborhood." (I judge this solely on the basis that they charge to link to you.)
You might try reading the Link Development Forum [webmasterworld.com].
how do I go about building links for my website I mean whats the best way to get started
Content! Original, reliable, pertinent content.
Most website's creator neglect to produce good content. If you want your website to be visited often, to be cited by many other websites, to be recognized as essential, to score a big PageRank, create content. Don't be obsessed by links. Links can be content, but usually they are only that: links to content.
The hardest, time consumming, fondamental work to be done on a website is to display content. Without substance, a website is useless, an empty shell. Buying links won't compensate for lack of content.
With good content, links will follow. Users aglomerate where content is. They sought content, not links. You'll receive proposition for reciprocal links in proportion to the seductiveness of your content.
Content...content...content...content...
you're saying that by participating or buying links will get you banned
No one has said this. All I shared was Google's guidelines and my interpretation of any "pay us and we'll send you some high PR links from our network" service.
If what they offer would boost your site in the SERPs then Google will frown upon you using this service (and the company offering the service) because, naturally, Google wants to be in control of it's own site -- just like any site owner.
There's an entire forum dedicated to discussing the intricate details of Google, but this general advice will always hold true: If you're doing something specifically to "cheat the system" know that the system doesn't want you cheating and, if caught, the system will surely punish you.
Now I just need to find a way to keep that big a** ball rolling...
Useful content = useful links