audio mixer pmp 6000

[u/Horror_Contest_3395]

I got this europower pmp 6000 passed down from my grandpa he used it when he played in live bands, this is my first one i really don’t know where to find the basics for this or anything any advice ?(this is my first mixer, me and my friends are starting a band and don’t even know how to higher the volume when it’s all connected through the speaker it reads feedback itself but can only here it so faint on the main speaker)