Looking for gaining and bloating advice

I (M20) have been into weight gain for a while now and want to start exploring it in person by properly stuffing and bloating myself, I'm just not too sure where or how to start for both gaining and bloating. When it comes to gaining I would assume that it comes down to just eating as many calories as I can and I actively have urges to just buy and eat cakes and cake mix of many varieties so I have that covered but I'm unsure if there's more to it, I also found some weight gain cream that I plan to try soon so that is all covered. But bloating is where I'm really unsure, I know of the coke and mentos bloat and that's about it with straightforwardness, since I've heard of others like Jell-o bloats, cake shake bloats, just chugging soda without bloating, sprite and banana bloats, chugging water to bloat, and one other I can't think of, but I couldn't find anything for a few of them and want to find as much information about them all before I try one.