do they have the equivalent of these where you are?
over here colleges and uni's allow you to do courses from home at your own pace from your own computer, it may be worth checking out your options where you live.i think you may be able to use the uni sites here but will probably have to pay for courses.
another alternative may be to utilise skills you already have and freelance on an ad hoc basis, if youre getting medical pension you may have to check with them to see what youre allowed to earn without it interfering with your current income.