Actually answering some of the questions is pretty easy, here is the algorithm - first find in the question the important keyword, this is the step that works only for some of the nodes, but sometimes its pretty obvious like in this SoPW:
randomly choosing elements from an array the keyword was random. Second step is go to cpan search and type in the keyword. Only for the last step you need some perl knowlege - you have to chose the apriopriate module, but usually there is not that much to choose from. Than you post an answer like: Hey look at
Data::Random. Thats all.
Another variant of this is to use merlyn online articles. This was allready covered in Merlyn's secret uncovered!.