Fairly new to streaming. Where to start?

A hearty good day and thanks for all the info. I am digesting it all at this time.  As you can see, I'm not an impulsive buyer. 

I have considered the WXC 50 Yamaha, Node 2 and now Aurender as a server. Probably after that, a R2R Dac, I know the Aurender is most expensive. And maybe I have to go some over my budget w/ the Aurender and MHDT Orchid Dac. This is not written in stone. Still may go with the Node2. But I've learned that in audio, everything counts. I learned that, when I begrudgingly paid $175 for a Oyaide Power outlet & it DID make a difference. Then when I tried pumice stones as footers for my CDP and it made a great difference in sound stage. I now discount very little. Anyway, that's where I'm at now. And again I thank you all.

@bicu                                                                                                                                                                                                                              Forgot to thank you for the link to Volumio  Looks interesting. One poster said the Boss sounded close to his Yiggy & Ambre server. I do believe in giant killers. you can look at my amp and see that. Yet believe they are the exception, not the rule as some like to think.

1) I have a Roon server with a couple of thousand CD tracks ripped to ALAC, vinyl tracks also ripped to ALAC, several albums worth of FLAC content from HDTracks, and a TIDAL subscription. For me, if I’ve got local digital copy, I listen to that (less impact on my internet feed). If I have a worn (albeit cleaned up) track on vinyl and it’s available on TIDAL, I listen to the TIDAL copy. So, the advantage I find is I can always find the cleanest copy somewhere. Disadvantage? If you’ve got limited internet bandwidth, you’ll get choppy/crappy  quality from your stream.2) Um, no.3) AFAIK TIDAL and Qobuz highest quality streams are pretty much equivalent; I don’t have SACD, but I would say that in comparing my HDTracks content to the equivalent content on TIDAL, HDTracks wins. And certainly playing CDs on my H/K HD990/HK990 combo is better than TIDAL. But it’s the AMOUNT of high quality content on TIDAL that is the compelling factor in getting a subscription.4) You need a box with computing power that will receive a streaming signal, and an RCA stereo cable to connect it to an AUX input on your amp/receiver. I use a Sonos Connect and feed the digital output to the DAC in my HK990, and it’s great.