Hey, you can find some training material for a eCLIP data analysis on Galaxy here. You would have to change some things in the workflow to allow for PARCLIP data, such as: skip the UMI detection step. Furthermore, if your read library is in single end, which is quite often for PARCLIP, then pay attention to the adapter removal, mapping and peak detection step and set them on single end. So basically, play around :).
If you are new to Galaxy then maybe follow these tutorials here. They give you a good understanding about the basics.