http://www.stevenaverycase.org/police-interviews-and-interrogations/
His interviews are listed here. There is audio for some.

You will also find a few others there.
Off the top of my head.....
I think he said he went to work every day the rest of that week.
Tuesday evening IIRC he went to see Jodi (his gf) at the jail.
Wednesday.... I don't recall anything that stands out.
Thursday him and Earl went to an auction somewhere, got home that afternoon. I think he may have gone to put money on Jodi's account that day, but not 100% on that. I believe it was Thursday evening that Steve and Charles were going to Menards to get the wood or whatever for the cabin roof, when Steve saw 'lights' and turned around and went and looked around his place.
Thursday evening is also when Andy Colborn went to the Avery's and spoke to Steve.
Friday, I only recall that he was at Barb's with Bobby and his buddy, this is when Charles, who was with Brendan on his way to the cabin, called him about lights in the back corner of the yard (where the RAV4 was found) Steve, with one of the boys I think, to investigate.
Friday is when Lenk and Remiker went back to the Salvage Yard and did a walk through of his trailer.
Friday he was doing news interviews already. Here is one, it's the raw footage from NBC26 that they have released since MaM. [video=youtube;EtrzOgH2k10]https://www.youtube.com/watch?v=EtrzOgH2k10[/video] The only thing I notice about that video is just how dark it is out there!
Saturday he left early in the morning with his mom and I believe Blaine, and went to the cabin in Crivitz.
That's all I can remember off the top of my head, hope it helps