buying btc

This is a newbie question… but I need some answers. I want to make my first purchase and looking to get some BTC. How do I make an order if BTC keeps dipping? Will the supplier usually keep it at a fixed amount of BTC once I put out my order even if it dips right after?

I c&p'd the below from a ugl's website. Not sure what to think of localbitcoin website? Take a look and give me any feedback/first hand knowledge any of you guys may have...if it's gtg it would be a good BTC source. __________________________________________ Here is the easiest way to do...