Maybe you could be more specific for people who do not know. WHAT specific skills can earn you bitcoin. Web design, code, advertisement?
The best skills to make bitcoin are those related to technology in some way or form or those that can be done remotely, forum administrator, web programmer, selling non physical products, etc.
OP is being sarcarstic, he's telling you should learn any job in the world, like cooking.
So you take your wage and buy bitcoins...
There's no much space for everyone on internet.