I saw your comment on a page and thought you needed some encouragement.
I have just begun too, and from the looks of it there are exercises that are in the video's that you can do in a chair!! Who would have believed it eh? I heard of one sparker who just started by walking around the island in the middle of their kitchen. We do what we can do until we can do more, then we do more.
I wish you well on your journey! Don't forget to have some fun along the way.