No tips. Just keep playing. Thats the best tip I can give you.
A lot of people find the series to be unfriendly to newcomers but tbh I never had that experience, just keep experimenting and trying everything the game offers as it becomes accesible to you or you simply become curious about it. Very quickly you are gonna learn how customization of every element works.
Maybe the one tip I'd say is do try the combat tutorials for weapons and use the one you like the best and feel the most comfortable using. When it comes to combat I'll honestly wouldnt worry about "which weapon does what better" yet - let experience teach you that, or research the info later, when it becomes relevant to you, since as of now you are being bombarded with a lot of info to focus on specifics. Learn the generals first. MHRise is in my personal experience the easiest MH so far, so getting comfortable with weapons, upgrades and combat gameplay should be your priority. Just keep playing. Dont give up.