Thank you, everyone, for your help! And thank you to those who have submitted it for acceleration - I really appreciate it! It's still not gone through, but I'm in no huge rush, as long as it does actually go through at some point... I'll keep looking into it though and hopefully it will sort soon I'll also have a look at the links everyone suggested!
I (foolishly, perhaps) put a low transaction fee on my transaction and it's not had one confirmation after ~40 blocks... It makes me wonder, will it ever go through or do I need to wait for it to drop off the network then resend it with a higher transaction?
I don't think that Bitcoin will die anytime soon, but in the (very unlikely) event that it loses adoption and does die, I think that LTC would be a good contender to become the biggest cryptocurrency - it has risen pretty well over the last year or two, to only have a small(ish) drop recently. Another contender would be DOGE - it is holding its value pretty well at the moment (even though each coin isn't worth much), and there is no limit to the amount of coins produced, which could help it do well (not sure why, just a weird theory).
How can it be a blockchain explorer since we all have our own blockdhain?
That's an interesting point - I'm curious to know how this coin will take off and actually work, because the whole idea of cryptocurrencies is that they are decentralized and use a shared blockchain...