Ist suggestion would be to bring it to an archery shop or club. If you are brand new to archery, it would be better to be around other archers to help in person.
Set aside the broadheads for now.
Does that DL fit you? What carbon arrows? Brand, spine, etc. Hard to fit a person to a bow just on the web.
\How tall are you? Shooting with just your fingers or using a release?