Use LIberty Reserve through an exchange as the last resort. If you have a method of getting funds to an bitcoin exchange without having to route it through LIberty Reserve, the end result will likely be less expensive.
Generally, an individual generally only has one of those. For instance, if you life in the U.S., you generally aren't interested in depositing some EUR.
Take a look here, and if you still have questions, feel free to ask.
- http://en.bitcoin.it/wiki/Buying_bitcoins
Thanks, but still some experience and suggestions for Liberty Reserve would be nice to see.