I'm a fresh graduated Computer Science major. I'm confident with my C++ but my first job requires me to create a business manager on the web using Ruby on Rails. I just started learning Ruby 2 weeks ago and already got the basic. What is the best source so I can practice some exercises? I need the answers to compare with my solution. Price doesn't matter as the company will pay for the price.
I'm debating within these sources:
Michael Hartl, Ruby on Rails Tutorials, a lot of people recommend this guide for me. I haven't tried but it seems good. Not sure if it provides detailed answers.
Cousera by Johns Hopkin. Pretty good, but grading takes forever, and no good solution.
Odin Project. I think it is a good guide. However, I also feel lost and I don't think this is for me
It would be great if someone can help me pick the best out of these three or at least give me a good comparison. Thanks in advance.