The simplest modules I’ve seen are from Grove. The grove compatible modules don’t need you to dabble with any resistors and capacitors.
Once you go beyond the pieces provided by them and you try adding your own, you’ll inevitably have to deal with the electronics bit. Learning the basics is easy and shouldn’t take more than a month. I’m afraid I don’t have a ready resource to recommend for that. I believe there is a good MOOC course on edX to learn the basics. I’ll see if I can find the link and update this comment.
Once you go beyond the pieces provided by them and you try adding your own, you’ll inevitably have to deal with the electronics bit. Learning the basics is easy and shouldn’t take more than a month. I’m afraid I don’t have a ready resource to recommend for that. I believe there is a good MOOC course on edX to learn the basics. I’ll see if I can find the link and update this comment.