I have a few questions:

1. I am not familiar the Fallout series. How much will I need to know about it in order to participate? 
2. Are weapons predicated on a particular outline or can I invent them as my mind pleases? I understand the concept of overpowered from others but I'm not sure how much room I have to work with on this. 
3. The three factions have no real detail in the premise. Are they based off the series (which may or may not answer my first question) or are they freeform? 

All in all, I'd love to join. I'm just unsure if I'm...prepared to do so, knowledge-wise just yet. xD