Hello dear. I just started learning RoR and already ran into a "reef". I read Agile Web Development with Rails (Fourth edition) of 2010, but it contains all examples in Ruby 1.8.7 + RoR 3.0.1, I tried to configure everything in RVM, installed another version of Ruby in parallel (the main one is 1.9.3) , created a new gemset for this version, then tried to install the correct version of RoR (3.0.1), but version 3.2.9 was installed.
Now I ask for help from you, dear experts, because you need to learn RoR as soon as possible.
Thank you in advance!