You should keep in mind that "Bioinformatics" is a broad catchall term, which covers many different things at the intersection of biology and informatics. Very diverse questions and techniques are used in biology, which means there are a diverse set of informatic methods to accompany these.
Therefore, you should keep in mind that a "one size fits all" tutorial may not fit all. I do think that a tutorial in Perl for biologists is a useful concept, but you should keep in mind that it can be quite a broad term. It is exactly as bwelch says. Once one gets a handle on the terminology, it is like any other analysis.