Please start here:
https://winscp.net/eng/docs/guide_schedule

I want to download .pdf files from an FTP server. Every wednesday new .pdf files will be placed by our customer, and I need to download it to my local Desktop.

Now I tried to search through the documentation on here, but I don't speak english natively and can't really understand the important parts.

I don't really know a whole lot about WinSCP, never used it before and now need to write a script that automatizes the process of downloading the files.
Does anyone have some tips to help a newbie?