How to migration from Siemens PLC to Allen Bradley PLC?

Hi Dear Friends, I have been working with Siemens for last 3 years and now I want to get in to Allen Bradley I will appreciate if somebody help me and show me good starting point how to learn RSlogix software and how to know all modules and become integrator.How to knowing the modules is very important for me because I think that Working with software is in the next step Best Regrads*****