The majority of my bookings come from following providers on Twitter. Most providers include links to whatever website they advertise on, so I just follow those links to get details, pricing, etc. Some providers link to Tryst or LeoList as their platforms. I do sometimes browse Tryst after following a link, but never LeoList (that place is a cesspool of scammers, and bait/switchers)
But the other benefit of Twitter is that it often gives you a chance to see selfies and other informal photos to compare to the studio pics on her website, and it gives you a chance to see what the provider is actually like. There have been a few providers I initially thought seemed quirky, edgy, and fun, but eventually realized they were drama queens, misandrists, or oxygen thieves. They would be insufferable in a booking.