Strengthen myself for the future ...

Even I'm studying PhD now, but I'm still very worrying about getting a god job in the future, will what I'm studying be treated well?
...
Reading some Job Announcement, I think I still lack of some skills, so I plan to study some more:

1. Java -  man this is what I hate the most
2. C# -  I used it once before, but almost forget
3. R -  statistic language, very good one
4. S-Plus - similar to R
5. MacOS - plan to buy an MacBook Air for my dad

... and some more that I forgot ...