When you are first learning to sew, it's a good idea to play around on your machine without thread. This will help you get the feel of the machine without worrying about thread jamming and bobbin winding. I've posted some free worksheets in my Craftsy Pattern Shop to help you with this.
The first sheet is simply straight lines - the goal of this is for you to work on ...you guessed it...sewing straight! Line the RIGHT edge of the foot up on the edge of the line and WATCH THE EDGE OF THE FOOT and NOT THE NEEDLE!
The second worksheets will help you work on speed control; they are squiggles. Line the right side of the foot up on the edge of the squiggle. SLOWLY sew next to the squiggle. It's not easy and you may not be able to do it. The point isn't to sew perfectly. The point is to learn how to control your speed with your foot or the speed control on your machine.
The third set of worksheets are connect the dots. These don't make anything...one day I'll fix it and you make a spool of thread or something. But for the time being, all you need to do is start at "1" and sew to "2" - then end with your needle down, lift your foot, pivot (with needle down), drop your foot, sew to "3", lift your foot, pivot to "4", drop your foot and sew to "4." This is all about getting used to ending with your needle down, lifting your foot, putting your foot back down, etc.
Download all my free tutorials, including these practice sheets!