Loading and displaying sprite animation using individual files (tga file)

Hi,
Hope this is a correct place to seek help on this topic.

I am porting a game into unity. The game has a lot of tga files that are frames of animation sequences.
I have 100's of these tga files that make up a couple of dozen animation sequences for explosions. Each explosion is unique.

Since there will be lots of explosions in my game (of course) I will be setting off lots of these animations in the game.

I think I should be using sprites and am looking for help on best practices for building the sprite prefabs and displaying them in a sequence when using files as the animation image source.

A lot of searching on the web has brought me to stale sites with no dates and older release material.

Is there some recent tutorial material someone can point me to?
Would someone consider being a tutor for me on this topic?

Thanks, appreciate any help.