Really not sure whether its a good time to learn Ruby and Rails if you already know Java and PHP. I don't see any particular advantage that RoR has over established frameworks like Spring and Laravel. In fact Ruby is much slower than Java. Maybe Rails community is a little better than those frameworks but honestly you will get everything that you need in those frameworks as well. Had you been just beginning as a web developer, I would have recommended Rails but not after you have done 5 years of web dev in other good frameworks. Personally, I think its not worth it.

However incase you go ahead, here's a good learning path for it.

• Odin Project - learn about Ruby and Rails basics here.
• Micheal Hartl's Rails Tutorial Probably the best book for beginners in Rails. Walks through making a real world project.
• Agile web development with Rails 4 Intermediate level concepts of rails.
• RailsCasts Amazing screencasts for Rails
• Rails docs Rails has really good documentation. Docs are very lucid, go through it while you are building projects.

Above resources have good rigour and good amount of hands-on coding and also you end up making some projects. I think this should get you flying as a rails developer.

Best of luck! :)