Important note: I crochet right handed, but if you follow the directions in the way that works for you you'll end up with beautiful double crochet!
Step 1: Gather Your Materials
To double crochet you will need yarn and a crochet hook. Currently I'm making a mermaid blanket during this tutorial I'm using blanket yarn, and a 16 mm crochet hook.
Step 2: Loop Over the Hook
Start by looping over the hook.
Step 3: Dip Into the Next Stitch
Dip your hook underneath the next stitch. At this point in the stitch you should have three loops on your hook.
Step 4: Loop Over Once Again
Loop over your hook again, at this point in the stitch you should have four loops on your hook.
Step 5: Loop Over Again and Pull Through
Loop over once more, then pull the second and third loop over the new loop.
Step 6: Bring Over the Next Two Loops
Loop over your hook and bring the next two loops over your hook.
Step 7: Bring Over the Next Two Loops
Loop over once more after this you should have only two loops left on your hook.
Step 8: Bring Over Your Final Loops
You should begin with two loops then loop over one final time and bring over the final two loops.
Step 9: In Conclusion
This is a hard stitch to learn so be patient, this is the tallest crochet stitch like I said at the beginning and it adds some nice bulk to a project when partnered with a thicker yarn and a big hook you can make progress super fast!