Seams using knifty knitter?

I just got myself a knifty knitter and have been enjoying making scarves with the purple rectangular loom. I think I’d like to try making a blanket next by joining together several panels. I just don’t have the vaguest idea how to do a seam. I haven’t been able to find any directions either. I don’t know the first thing about regular knitting or crochet, but I’m willing to learn. Any ideas would be appreciated.

Thanks a bunch!

Here are two ways:

Edge to edge

Amy’s video on mattress stitch