If you are looking for datasets from amateur astrophotographers to practice with, there are a number for useful resources.
Processing is meant to be fun! If you really need help with a particular dataset, jump on the forums or contact us directly for some pointers - even if you're just using the trial.
The IKI Observatory is a remotely hosted astronomy setup in Castilléjar, Spain at https://www.pixelskiesastro.com/. FLO / Ikarus Imaging have sent out a setup in partnership with Optolong Filters and Starlight Xpress. The projects purpose is to provide a community based remote setup that can be collaborated on on Star Gazers Lounge - the data is made publicly available free of charge and the targets are chosen on the SGL forums.
Most modules come with presets that quickly dial in useful parameter settings.
The 'AutoMask' button launches a popup with access to two quick ways of creating a star mask.
The two aspects - colour and luminance - of your image are neatly separated thanks to StarTools' signal evolution Tracking engine.
You can convert everything you see to a format you find convenient. Give it a try!