This would be relatively simple. Just set up collision shapes or polygons around the objects and have an Area2d that follows the mouse pointer and checks for collision with the objects.
Stick to tutorials on the basics first and get familiar with drawing images, sprites and collisions. Once you get that under your belt it will be simple to implement to your game.
Godot also has a pretty good particle system, you will find tutorials no problem and the docs are pretty good.
Try these:
