This is a very broad question which is virtually impossible to answer without sounding like you've copied the "Contents" section of the Camel book. It is also difficult to generalise since all of us are different and, for example, some programmers can take to OO like ducks to water while others never get their heads around it, even though they might be very, very good coders. Setting an artificial time limit of one year is probably not a good idea.

I would just suggest that you lay good foundations for your career by first mastering the fundamentals of Perl variable types, particlarly the ability of scalars to hold references to other variables thereby building data structures. The rest, IMHO, really does follow on from that. Visit the Monastery often and, even if you don't post your solutions, have a go at solving some of the questions posted in SoPW; compare your solutions with those contributed by other Monks to see how you could improve your code, or perhaps improve on theirs.

Sorry this is not a detailed topic list but, as I've said, I don't think your question can really be answered so simply.

Cheers,

JohnGG