>>2727676>the highest level of AED is with shield charged, right? The SAED.For the SAED you need the shield charged and at least one phial to perform it.
> Does it matter how many vials are charged or is a yellow charge enough and it influences just the durationThe color of the phials indicate how much charge you can store and whether you are overcharged. Yellow will give you three phials, red will give you 5-6. The amount you transfer to the shield changes the duration for how long it stays charged. Also, the more phials you have stored the more damage you can get during the SAED. Those phials also allow you to stay in savage axe mode longer if you want to play like that, but i believe that is only for players with iceborne.
>Also is there training in World or should I do expeditions to try out weaponsThere is a training area you can access by going to your room or on the map. Training is good, and so is going on expeditions but most weapons have a lot of moves so looking up a tutorial on the weapon is a great start. Good luck and enjoy world, I had a great time with it.