First of all if i were you, I would get creatine monohydrate. The cheapest and most studied version of creatine. I would take 5g with my protein post workout, or if you're bulking, 5g of creatine with a simple carb (either consume your post workout meal or add 20grams dextrose powder with the creatine and drink it, it will rapidly increase absorption rate before it's converted in creatinine in the body).
I use creatine on my cut helps me retain strength while on a deficit.
I would recommend you for your first week to take 5grams creatine 4 times a day (20g in total) in order to saturate your body's creatine stores, amd then continue with 5g a day. Now many people say its not needed, but i do it anyway. Have in mind that creatine dose in the first week might make you feel bloated but it goes away when you go down to 5g a day. Also creatine monohydrate will cause some water retention (nothing much really, you'll be a little bulkier), because it draws more water into cells, which is a good thing.
I would recommend you instead of spending money on hmb to get aome dextrose if you're bulking.