balance your exposure sa foreground (with flash) with the background scene for covering events. You can control the background exposure by shutter priority or derecho nalang sa manual setting and just let the flash go on TTL for the foreground.
Events photography labi na indoors ug gabii or indoor lighting, mas nindot gyud nga klaro ang background (usually warm ang lights indoors) when using flash kay sa sige lang ngitngit tungod kay taas ang imong shutter speed. 1/30sec or 1/40sec will usually work for most shots labi na nag group picture while maintaining a good light for the background. In general, you can under expose your background at 1/2 to 1 stop than your foreground that is hit by the flash. For close-up portraits or small group shots, the flash diffuser is nice to have for softer light. With a Nikon system, di ra ka mag problema sa mga shots nimo, kasaligan ang flash system sa Nikon, sure gyud nindot ang kuha bisan piyongan pa nimo. hehehe Good luck and enjoy!
