I started putting my current work in a rubbermaid bin. The rest of my yarn is in a big wooden theatrical roadbox. The door openes like a fridffge so the cat always tries to get in. Double crochet is just one step over single crochet. You yarn over hook, insert hook in work, yarn over again, pull through first wtwo looops, wait no that doesn't sound right lol. You can goodgle step by step double crocht. . If you're interested in the granny ripplem, google linus project granny ripple. Its a great pattern. Now I'm wanting to crochet lol.

I also find that it helps keeps my hands limber.