First of all apply as an affiliate on Login - Onlinelogic
Afterwards pm me or send me an email so I can approve your application.
When your application is approved you will be able to login at the affiliates area.

Click on offers and in the submenu pick an option you want.
Search for an offer and click on the offer and you will see the tracking link.
I suggest using a link shortener.
For example you click on Pay Per Install and afterwards you click on the Lime Wire offer.

Make a text link like:
<a href="tracking link" title="Lime Wire Download">Download Lime Wire now and find everything you need</a>

You can also make a banner.
<a href="tracking link" title="Lime Wire Download"><img src="http://s5.tinypic.com/24d0pvp.jpg" /></a>

Afterwards you can track your clicks and conversion through the affiliate section.
You need to keep on testing and optimizing for the best conversions, the key is to split test certain offers and see which converts best.