Laser can be used as a guide for stitching straight instead of a sewing machine gauge. the pen can be used to adjust laser position, needle position, stop position, stitch width, and to auto align you design in your embroidery field if you hoop crooked, it rotates the design perfect for you. the laser is really invaluable. I also got the sa195 which is the open toe plate for the muvit foot, it allows more visibility. the manual is pretty thorough, also there are a lot of videos on the brother website demonstrating each feature. I know you didn't buy your machine nearby so you will probably have to watch videos. I only took the embroidery portion of my class, but was able to figure most features on the machine with the manual. Don't be afraid just dive in