Creatine wouldn’t hurt, it’s inexpensive but not a miracle by any means. Creatine is utilized by our phosphagen system, basically what we use for ATP generation before glycolysis and the rest kick in. We get creatine from our diet (meat, supplements) and from what our bodies make daily. Extra creatine serves to keep our stores of creatine phosphate full, which at max will help generate enough ATP for 8-10 seconds of exertion. Think low rep, higher rest training, as it takes 3-5 minutes for the ATP spent to fully replenish. Not that it won’t help for a higher rep-type of training as you still utilize the phosphagen system for energy.
I use it and have waffled between low rep and high rep programs. It’s helpful but I think the bulking benefits are way over advertised. Just be aware that when you take it you’ll gain 6-10 lbs of water initially. As for loading, it’s up to you. After a month you’ll be at saturation regardless of if you loaded or just did 5g a day. I do OMAD and trying to load on an empty stomach made me a little queasy so I opted for the slower route. If you have any questions I’ll be glad to help where I can. Good luck!