Have started to develop interest in understanding the market?
Its never late to start these stuffs.... i am in India. So, the rules in the links i am providing are applicable to India, but some advices are applicable in general...
Regarding Shares
http://content.icicidirect.com/learning/university.htm
http://www.indiahowto.com/what-are-stocks.html
http://www.lucky-dog-investing.com/index.html
www.sharemarketbasics.com
http://www.financial-realities101.com/
Go through the above links.. will give you a fair idea.
What is so bad in shares?
when you do something hastily. So... be patient when you are investing.
"Curiosity kill s the cat" ?? Think so??
Definitely applicable here...

