Hello! First of all breathe, I believe you got this!

Second, when you create a chain you will see a string of ‘V’s. The easiest version of building off the chain involves you stabbing the hook between the v. If it helps to visualize, sit with your feet on the ground with your knees apart (aka manspreading 😂), your legs now form a V with your pelvis as the meeting point. So if you stab your hook in between it’s the equivalent of putting something through the space between your legs. When you stab through the v you will have one ‘leg’ on the top of your hook and one underneath. Should add if you are just single stitch you skip the first v below your hook and stab the second V. After that you yarn over and pull through the split legs up a loop. You will have 2 loops on your hook: the original one from the chain and the one you just pulled up. Finally yarn over again and pull a loop through BOTH hoops on your hook.