So if I make a bag how do I do the inside so I won't have any seams? I have no idea what that is even called. I was wondering if someone could give me some instructions or point me towards a helpful tutorial. Much thanks :D

Here's a few for you to choose from. ;-)
http://freebiesforcrafters.blogspot....ch/label/Totes

The first one looks very doable. Good luck and don't forget to
post pictures. :-D

Your lining seams will be hidden because only the right side of the lining shows.

You can also use French seams. That's what I've done with a few large quick totes I've made for hauling cutting mats to classes.

The seams on the front and the back will be inside the bag and hidden.

You could also use a serger.