I think doing the first 2-3 stages of any course is usually a good enough to understand the core for the learning experience. The later stages tend to get more

I think doing the first 2-3 stages of any course is usually a good enough to understand the core for the learning experience. The later stages tend to get more involved (e.g the last stage of Git & SQLite are rather tricky for most). Good suggestion regarding having trial projects for every language, we'll consider that.