Like Rufus said, don't be afraid to ask. If it is the wrong forum someone will help you get it to the right lace to get the best answers.
I would like to point out that as a general "rule of thumb" a 10gn per pound or bow weight is a good start. Most carbon arrows are listed as per INCH of arrow(as longbow55 mentioned his arrows are per inch). I tend to stick with the PER POUND formula as do most trad shooters. And that is when the 10gn/# comes from. BUT, as Others have said, work up an arrow that works great and you will be having fun. I shoot around 60#@30" and will have some carbons that weigh in at 475gn. that is about 8gn/# and with my arrow cut at 31" OR 32"(sometimes i will not cut them) that is about 14-15gn/INCH. My hunting arrows are 31" long and weigh 750+gn. That is 24gn/INCH but only 12.5gn/# Just try not to let people like me confuse you and work up your arrow to fly well. As a rule for hunting 10gn/# is a good start, as stated several times already. Good luck
Chuck