Depending on how well your bow is balanced, a stabilizer would be good. A lot of the other stuff is personal preference. I like a three pin sight, but if you shoot pretty flat you could use a one pin sight. Depending on how loud your bow is you could add string silencers(or whatever they are called). I like my drop away rest, but whisker biscuits are also common.(you lose a bit of speed with the whisker biscuit). A lot of people shoot expandable broad heads, but when I got my bow I was told that it would be easier to start out with fixed broad heads. Because of that I also have fetching on my arrows instead of vanes.

Like I said before a lot of it personal preference and you will find out what you like as you go.

I hope this helped. Let me know if you have any other questions.