First time with new AR-15

I just recently bought a Standard Manufacturing AR-15 Chambered in 5.56/.223 NATO. I just recently became a gun enthusiast kind of late in life, lol. After buying a SAR USA .45 ACP, I was bit with the bug for guns! I then went out and got a Ruger 9 mm P93DC, a Mossberg Maverick 88 and completely modified it, a Heritage Arms Rough Rider 22LR. Then I got carved wood grips and a decorative etched cylinder for the 22LR.