When I first came a few months ago, I had trouble adding coins to my catalogue and doing other trades. This is because the tutorials are not updated and I can hardly understand what is going on although the concept is similar.
One example:
https://en.numista.com/numisdoc/how-to-search-a-coin-in-the-catalogue-121.html
Still using the old layout. (I guess?)
I hope this can increase the swap rates among newcomers and hopefully reduce problems.
Thanks,
SRL