You wear these by pushing the larger part onto the shirt and bringing the tie through the chain. But I would not wear this one because it is a Shriner symbol and some guys will fight you if you are not entitled to wear the symbols.
This is my most tasteless tie bar: If one ignores the engraved and ostentatious Dolce & Gabbana, it's actually a VERY nice tie bar. The sterling silver is extremely thick and nice to handle, and when it's been rubbed clean with a cloth, it looks fantastic.
OK, Relax. My opinion is the chain is that it is a bit much and I couldn't see myself wearing it either. Good advice on the Schriner symbol too, you don't want to be chased down the street by a bunch of little motorcycles (sorry, Wiseass again). I would go with a simple bar to start, see how you feel about it and gear up from there to chains or heavier decoration. We good?