I'm new and need help

I dont know anything about home theater system except I need and AVR and some speakers and can connect them with either hdmi, optical, or rca cables to my tv. Im on a budget so my plan is to buy a used old avr and some bookshelf speakers for the time being and upgrade over time... I have seen a yamaha htr 58 10.0.0.0.1 30 within my price range and was thinking to go with that and connect my tv with an optical cable.

issue got solved

I do not think that you will hear anything else than stereo .
The two left speakers will play the left channel. Same thing ; the
right speakers will play the right channel . The center should play
both channels .
You will have to buy speaker cables . Not highend ones .
Long ones for the surrounds speakers. Gage : 12

Along the way , you will be able to buy , higher ends AVR at very good price.
Even a new AVR will be obsolete in a very short time. Often , owners will sell it at big discount
to buy the new flavor of the month.

Dont forget the subwoofer.

Stereo playback unless , the Yamaha has a good upmixer for 
surround mode