When talking about this topic, many people commonly throw out the Book of Veles as it was proven to be a literary forgery. This, however, greatly limits my sources as most Slavic reconstructionist/neopagan websites I have seen continue to cite the text as a major source of their belief system. I also understand that the pre-Christian Slavs did not have a writing system, which obviously limits their ability to record their beliefs to at least the arrival of Christianity (since the Cyrillic alphabet was developed in the 9th century by Christians).
Are there any legitimate, reliable sources about the pagan practices of Slavic peoples? If so, are they written by Christians or by Slavs themselves? If not, is there any historical accuracy to Rodnovery (modern Slavic paganism) at all?
I made an account just so I can replay to this because I've been searching for this for months, basically there is no sources, but there is a book from a Serbian writer that talks about Slavs and the culture, and there is a small segment from an old book from a Roman writer that talks about pre-christian Slavs, and I think he mostly talks about our appearance (barbaric and heavily tattooed). (I think i didn't get anything wrong cause that's the most common subject with my tattoo artist and we both consider our selves as antifa - pagans in some sort of way).
p.s. When I find out what the books are I'll tell you if you want to, I know I'm late to this subject but I just found this :)