I'd also recommend a Sagen Hunter's Field Saw, or Gerber E-Z Saw. Besides a knife, I also have a gut hook.

Being a beginner myself, I thought messing with the anus like most of the instructions suggest,... was difficult for me.

I use the saw to cut the pelvic bone, and may have to step on it to split it. Then when you pull the guts out of the rear, you can just cut the anus out, from the inside-out of the deer.