Creating affiliate links are the same as creating an external link. Just make sure you use the affiliate link you want to link to and not the regular site link.
Some more general information on links
Google likes simple navigation on your website and loves internal links as long as the material is related.
Google also gives good attention to inbound and outbound authority links.
If you are using references you want to point back to and they are from good authority sites do so!
Part of a general site maintenance routine is checking your links to make sure none are broken. Broken links are frustrating to the visitor and just plain do not look professional.
There you have it, the simple basics of linking internally and externally in Wordpress.
be sure to take the time to read the comments as many others will add to this information here and I find sometimes the comments are better than the tutorials!
Thanks for stopping by and keep on rocken!
Action = success!
Have fun with this and for more tips in WordPress be sure to go to my profile and check out all of my training tutorials. :)
Shawn>>