I've barely seen them but where do you get them? What are the di's and donts of a dress shirt in one color with a different color collar?

I just got that office job! I start tomorrow. I have all the basic suits . However I only have one pair of dress shoes. If I wanted like three or four what types should I get? I mean styles more than brands. I know I at LEAST want one brown pair to oppose my one black pair. I do like changing out the shoelaces. Also , are there any unspoken rules for socks when wearing a suit? I'm trying to dress up my suits but also get some casual wear. I look forward to buying more lol

I have the vest the pants and the jacket. All the stores around me told me "they don't make pinstripe suits anymore you'll have to find one thrifted " so I got this made on hockerty. It seems easy to mismatch this suit.

Heading to church for well 2 close friends of ours but we’ve known the bride for years before . She lost her first Husband and youngest daughter in a house fire ao the point that she has changed and been able to come through that and so much more and now is to a place in her life where she feels good about herself and is able to find a guy that treats her very good and has decided to get married again is a miracle in itself .

Which one looks better?