Help Please

Hi. I pulled Arle yesterday and immediately tried her out around Monday for an easy place to test out her skills. Whilst I love the character design and animation I have absolutely no clue how her mechanics work. I ve watched numerous vids and explanations but they get so wordy so quickly. Please can someoneone explain to me like I'm a total newbie.

I think it's important to note that I'm Genshin player for the story and exploration - I don't particularly care about farming for materials or the abyss spiral (although I occasionally go in for fun). As such, I don't need my Arle build to be THE BEST, I just need to understand how she works and what I can do support her play style.

TIA xx