Bow right out of the box.. I started shooting in Sept of this year.
My bow out of the box needed some adjusting to get it prefect for me. Luckily my FIL has a small archery shop basically in his garage. Check your draw length first, we did mine just under my wingspan/2.5 and put a D loop on the string. We adjusted the poundage some and he taught me some correct form. Once we had the draw length down I stood about 10 ft from a target and shot a few times getting the sight generally in the right place, then moved to 20ft and did the same thing. Once I had the sight generally in the right place I went to set my 20 yard pin. And have been working on form from there. Once I was comfortable with 20 yards, I moved to 30 yards, and finally to 40 yards. My whole FIL backyard is set up with a few targets going out to 70 yards. As for targets a simple box style target from Dicks sports will work with a backstop... Someone has posted a home made backstop that I am going to make when I move again. I try and shoot everyday just a few times and work on my form.
Within the first week of shooting I realized I hated the whisker basket I got with the bow and finally replaced it last week (wife did this for me, early xmas gift) with a drop away.
Dont strong hand grip the bow with your forward hand, let it sit softly and balance slightly in your hand... not sure how to really say this.
Arrows... I have already learned how to fletch and set up my own arrows. Learn this skill, it will save you money and I have already had to refletch my arrows many times while learning... i think the whisker basket messed up a few of the vanes too. Figure out how your arrows group by weight and what not.
Honestly you dont need a lot of stuff just beginning. Bow, with sight and arrow rest, a few arrows, and a simple target. I could have this totally wrong but this is how I have done it and seem to be doing alright so far. And only hit my arm 2 times... when I tried shooting my bow for the first time before I talked to my FIL on how to do it correctly. Right now I am shooting about at 45yards with a shot group of a softball.
Good Luck. I am enjoying it and hopefully will be able to get out and hunt soon.