Hi, Im relatively new to photography but have an understanding of the basics such as ISO, shutter speed, aperture, exposure, etc. I will soon get my first job as a photographer at a party/get-together. Its an unpaid job and really being done as a favor for the hosts. It will be my first time doing this sort of photography and I need some tips on how to get good pictures (they realize Im new to this but want a cheaper option than a pro photographer). I dont yet know the details of the party but I might be working inside with little light. I have a Nikon D3100 with an 18-300mm 1:3.5-5.6 lens but Ive heard from others that I will need a faster lens and maybe an external flash. Am I going to need any other equipment? Also, as its my first time using a flash, are there any helpful tips for using one? Tips on photography technique and composition would greatly be appreciated as well. Would the rule of thirds be applicable here? I realize Im asking a lot here but I want to learn as much as possible to be able to get good photos for the hosts of the party.