Blender to UE4 help

Im extremely new to animation, and have never animated anything but i would like to start practicing. I have no clue where to begin, some things I would like to know are how to combine separate animations like a players hands and their weapon, or having a player hold the steering wheel of a vehicle, what animations are neccessary to make a good looking animated video game character, ie walk forward,backwards,use this item(do i need to animate the used items seperate from the player etc)

Thanks in advance