Ask HN: How do you memorize the tons of commands related to rails?

I am currently learning rails. I used to programming in .NET and Java ecosystem and I got good GUI tools/IDEs such as VS and Eclipse. However, when I had come into rails, I found there are tons of commands are needed to memorize before you can use rails efficiently, e.g. rvm commands related to gemsets, rails commands for generating controller and models, rake commands for managing databases, etc. I found it's a bit difficult for me. Do you guys have any tricks or tools for this hard job?