Help! how do i join yarn?

there was a knot that came in my skein, and when i untied it, the yarn was in two different pieces.

i’m a beginner and have never knit anything more than one skein long, so i don’t know how to join yarn.

it is 75% acrylic 25% wool worsted weight

Help!!

There are several yarn-joining techniques in the Basic Techniques/More section.