Re: A fiew questions about raspberry pi
There's other blind community answers you can find over on [Raspberry VI], in general Raspbian Lite is used which doesn't have a visual interface, as its largely considered redundant and isn't accessible out of the box anyway. Typically users SSH in to the raspberry pi either through Wifi or an ethernet cable, when flashing your SD card you can setup both SSH and the Wifi on the card before plugging it into the raspberry pi. You also won't need any sighted assistance for this.
As for audio, as FamilyMario mentioned the HDMI covers audio, although you'll also need an HDMI compatible monitor to do that. The 3.5mm audio jack is a reliable source, and as for Bluetooth... The Raspberry Pi does have Bluetooth and Wifi support, but there have been issues related to Bluetooth audio in the not too distant past. I think they found a work around, but its may not work out of the box.
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