I learned to knit when i was very young but also stopped very young also. I told myself for years i would pick it back up. Finally i did and now i cannot knit to save my life. I can cast on then i just transfer to work from one needle to the next what a mess. I bought a how to book. I watch how to videos for some reason i am missing the most important thing please help
What part of the knit stitch is causing the problem? Is it in inserting the right needle into the stitch on the left needle, wrapping the yarn around the needle, or slipping the new stitch off the needle? Or is it possibly the method that you're using to cast on that is giving you problems? The videos here are very good at showing both the cast on and the knit st if you think one more video might help.
You should be aware that there are two basic styles of knitting, English and Continental. Use whichever one seems easier to you. Here are some good videos for you from Knitpicks.
Leisure Arts published an excellent book: "I Can't Believe I'm Knitting" that worked wonders for me. It had simple, easy to understand directions that made a cable fanatic out of me. Your local library may have a copy of it. There is also a companion book: "I Can't Believe I'm Crocheting" which is equally as informative.
Look at the video on the Tips page called 'Demo of a small project". It shows how to cast on then begin working a few rows then binding off. It should help you figure out what to do after casting on. If you're using the backward loop cast on, use another instead; it'll make loose loops of yarn between sts and create 'a mess'. The knit and cable cast ons are pretty easy and create a more stable edge for the first row.
I taught myself how to knit using the demo videos right here on KnittingHelp. If you still have questions, and videos/books don't cut it, try to find a LYS, the staff is generally pretty helpful and knowledgeable in the ones I've found in my area.