Thanks Myra!

I'm considering something like that for my knits class I have planned.

@@ElizabethMadeThisSEW please do!

That it is! You'll enjoy it!

My best advice would be to go to a sewing machine dealer and do some test drives. Ultimately, there's a lot of factors there to consider including your budget. I wouldn't worry too much about trying to get the "perfect" machine when you're just getting going. The machine that is solidly built and has enough features that you'll actually use but that's simple enough that you'll want to use it regularly will do. I go over a lot of metrics for finding your best first machine in my beginner's class: elizabethmadethis.com/self-reliant-sewing/

@@ElizabethMadeThisSEW Thank you so much, Elizabeth, I love this link. I'm pretty excited now to learn sewing.

Both HnB light and Soft Stretch are appropriate and are for stabilizing the fabric while you stitch. The Soft Stretch really just has a different hand when applied--it's must less crunchy than the regular HnB light, which I prefer for wovens. If the fabric is waving, it's likely because you stretched the fabric while stitching. I find with my students that a lot of times people unintentionally drag their left hand as fabric is moving under the feed dogs which can definitely put strain on a knit, even a stable one like sweatshirting. Curve your left hand up on top (like you're playing piano), spreading your fingers so that just your fingertips are guiding the fabric and move your hands with the feed dogs. It's always better to stop and pivot your needle than to keep stitching continuously. I hope that helps!