u/Braveless

Hello, I have little to no experience with knitting but I’d like to learn enough to be able to repair mishaps like this.

Is there a recommended way to fix this scarf(?) piece where a string got snagged and pulled? What tools are good beginner investments for this type of use? Advice for learning to knit from scratch is welcome, but not a current priority.

SN: Rules mentioned using the correct flair, but I don’t have the option to add any from mobile