What are the types of sewing machine for t-shirt making?

Hello again Camron
Page 3 of the manual shows threading. The thread goes over the and inbetween the washers. It is the grip of the washers that governs the tension. Cotton shirt is an ideal test medium.

http://ecx.images-amazon.com/images/I/81Po%2BWc4TCS.pdf

It is referred to as a 'Child's Sewing machine'!

https://www.youtube.com/watch?v=2N7Iff65EDA

https://www.google.com/search?q=continental+electric+sewing+machine+ce10131+manual

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The frase is larger. May be you select large letters instead of medium or small

use a long basting stitch longest setting you have o machine

If machine misses stitches consistently, it can be several things.
Needle not installed correctly, not threaded correctly, Bobbin case not installed correctly, make sure the bobbin itself is inserted correctly and spinning in the correct direction.
Finally, machine may need service the timing is off. All actions of a sewing machine are carefully "timed" to form a stitch while sewing. Sewing things that were too heavy for the machine or you hit the bobbin case while sewing can knock the machine out of adjustment.
Let a professional do the maintenance on your machine. Some may opt to show you how to do more in depth maintenance yourself at home.
Cheers,

try a ballpoint or a stretch stitch needle, that what I use when sewing
knit, t-shirt. it doesn't break the fiber in the fabric.

You need to use the correct type of needle for that fabric. The needle has to have a rounded end not a sharp. Also use a slight zigzag not a straight stitch. The thread needs some give or the fabric will keep popping.

You need to look in your manual and see how to turn your cutter off . It's different for each type of machine.

This I do quit often, just pull the shirt away from under the foot as you go, pause the machine every now and then and readjust the position of the shirt, it is time consumming but it really works and using the correct stabilizer with spray on glue as well as the plastic stabilizer on tob, (pin this very tight on top of the shirt) you get a beautiful result.

The bes way to hem a t-shirt on a household machine is to use a double needle, straight stitch. You will see two straight stitches on top and zig zag on the back. Just make sure the zig zag catched the top of the hem.