I can't seem to add a link inside of a character infobox. for an example, it asks me for the character's species, and lets say i put human. i want to but a link onto that, so people who view it can tap on it and go to a different page.
Are you trying to add the link when calling the template or when editing the template? If the former, it cannot be done. If the latter, just use the standard MediaWiki link syntax when specifying the label.
In the regular editor, if you simply want to put links in the different sections, you click on the infobox and go to the section you want to add the link to, and then it's just like above. However, I don't know how to do that for the section names themselves.