Hi I am a fine artist with experience in painting portraits in oil, sculpting, I've taught art. I just can't do these things anymore due to a chronic illness. I am looking to get into selling my work digitally so I can work from home. I'm not looking to make a living, just something to help pay the bills.
I've heard about stock sites. Digital downloads. What I am wondering is for someone that is starting , what might be the smartest way to go.
I can do all different types of work. I don't have photoshop, although use freebies like Gimp, Paint.net, I've dabbled in Blender, Daz, etc. I've done , portraits, animals and people, landscapes, nature, cartoon characters, line art. You name it . I am willing to try anything. I just want to know what might be the best direction for someone like me. No experience in selling digital but having the ability and ambition to do it.
 I'm thinking starting simple is best. So I was thinking of maybe clip art type of stuff, but I don't know how well stuff like that sells. Or what type to do etc. I'm sounding very noobielike I'm sure. But i learn fast and need to use what I have to get some money to help me live. So whatever I need to learn I will.
Any help. Advice. Links to places that are helpful for Noobs to learn. Blogs that offer advice. Good places for people just starting out and looking to learn?
any help appreciated.

Fine Art America might suit for jpegs of your paintings, especially if you are based in North America, where most of the market is (or have 'American-interest' content). I'd advise trying out their free offering, which is a reduced number of images, to see if it works for you. If you already have followers, either a mailing list or followers on social media, that could work well, as you more or less have to do your own marketing, especially nowadays. I've had random buyers (from the US, mostly US subjects), as I have no 'fanbase', but nothing since September.

I have health issues too, I try the same. But I still take a lot of pictures and had a nice archive. I uploaded photo's, some vectors and some pencil drawings. But in this 3 months I cannot say what is working best. I sold pictures of my angry cat and also some vectors. I guess you should try and find out. But it takes quite some time.