I forgot to post this here when this podcast went live, but in podcast 154 - Kelley gives lots of great advice for new knitters. Also, Alison and Kerin chat about problems that can come up when you are first learning to knit and have some funny stories on knitting projects gone awry and how they were saved due to some knitter knitting tips.
It is a great episode for newer knitters or knitters simply looking to expand their "how to fix mistakes" skills.
Sometimes you find a mistake several (or many) rows or rnds after you made it. Often it's possible to drop down and fix the mistake, unless the pattern runs at a diagonal, such as with many cable patterns. (In that case, you have to drop down all the sts involved, sometimes not worth it.) With st st, it's pretty easy: Put a st marker or safety pin in the offending st, work to the st at the top of the vertical row involved, take it off the needle and pull out the sts until you get to the mistake. Fix your mistake and then use a crochet hook to bring the next strand of yarn through the st, rep until you are back up to the needle. In garter st, it's more complicated. You have to alternate between taking the st from the front or the back. Here's an example:
The st marker is at the mistake, which has been fixed. I've been using my crochet hook to go through the st, grab the bottom strand and pull it through the st, making a new st. How do you know which side of the knitting you need to reach through? If the next strand is in back, you go through from the front; if the next strand is in front, you need to bring the st through to the other side (without twisting it) and then bring the strand (now in back) through the st. In the photo below, the next strand is in front. I will need to put the crochet hook through the space between the st on the hook and the next strand, using the handle of the crochet hook to pull it through. Then turn the hook around and reach through the st to grab the strand and bring it through. Alternate until back up at the needle. It's easy, once you get used to what it looks like.