I started playing Monster Hunter with MonHun: World. At first I thought the controls were really clunky and I didn't fully understand the gameplay loop. It was a bit of an ordeal to grasp it on my own but when I started playing with friends I had an absolute blast. To be fair it helped that my friends were there to guide me through everything I didn't understand. After their lessons I enjoyed the game much MUCH more. It is fun on your own but I recomend playing with others even if its folks online or (preferably) friends that you know well. Monster Hunter is great but it really shines when you play with friends. Personally my favorite so far is Monster Hunter Rise. Monster Hunter World was good and all but it felt like doing anything in that game took forever. Rise's gameplay loop was quick and snappy by comparison and I definitely enjoyed that. If you have a PC and Monster Hunter Rise is on sale I recomend buying it and giving it a try. The next game isn't coming out until some unspecified time next year so you have plenty of time to sink your teeth into one of the other Monster Hunter Games. As for the Hunting Horn.... I can't help you there. I main Great Sword and Bow. All I can say is that Hunting horn tends to be a support weapon but it does huge damage when you know what you're doing. Hope this helps! :)