You are too late, short version, bit coins are "mined" this means using energy efficient electronics, most commonly graphics cards to run through a shit ton of processing to "mine" on up. The cost of this is the electricity used run the card to mine one coin. You want to mine more coins than the cost of electricity to do it. When it first started coins were "easy" to find. As more and more coins are mined it takes longer and longer to mine one up. The is a finite amount that will ever be released. At this point you need a huge efficient operation to be profitable.
Long version, read the Wikipedia article or something.
If you are talking about using your money to buy them, I dunno but I wouldn't. The era of basically printing money via mining is gone, very slim pickings now.