Orchid ID and care help for a rescue

[DanielleMay]

Hi everyone! I'm very, very new to orchids and I'm desperately in need of some help. I was helping my mother in law move yesterday and I came across an orchid my brother in law had given to her a year or 2 ago. It's never been repotted or given any sort of fertilizer. It's only ever bloomed once in her care .I'd love to be able to save it but I really don't know where to start. I know that it needs to be repotted. Do I trim off the dead leaves? What about the pseudobulbs? I have no idea what type of orchid this is. My mother in law couldn't even tell me what color the flowers were when they bloomed. I'm totally in the dark here so any help or advice would be greatly appreciated! Thank you so so much for reading!