There are a lot of online learning plugins out there. Some offer a vast (and sometimes bloated) array of features. One at the simpler end of the spectrum is WPComplete.
It’s not really an LMS in the strict sense, so if that’s what you’re looking for then it probably will fall short. However, if you want a lean product then WPComplete is for you. It can complement the online learning system you use and, depending upon your course structure, it can serve as a stand alone LMS in its own right if you want to maintain control over you site and want to build your own LMS.
In a nutshell, the functionality it offers allows students to ‘complete’ a post or even multiple items within a post by clicking a button that changes from saying ‘Complete’ to ‘Completed’ (or whatever custom text you choose). It’s that simple. So you can have a series of pages and a student works through these, completing them as they go. It’s the leanest version of a LMS that I’ve seen. And for this reason I love it!
It’s priced at US$99 per year currently, so while it’s a lean plugin, the price isn’t as lightweight. However, it does renew annually at a reduced rate.
Sticking with a simpler product and it’s limitations sometimes results in a better website I’ve found so I’m all for the zen/minimalist approach.
There is a free version available, but it doesn’t really offer much in the way of features so it’s not a viable solution in my opinion. However, if you want to see it in action and get a feel for how it works then testing out the free version could be worthwhile to help you build confidence in the paid product (that’s what I did).