Still new, still got tons of questions

[Coatl]

I started playing about 1-2 weeks ago and I'm so far 42, but from what my FC in framfrit tells me you're still a noob 'till 50, and so I'm here to ask some nooby questions!

1.There are so many crafting classes. Blacksmith, weaver, goldsmith, etc. I'm having trouble identifying their differences exactly. Can anyone explain?

2. I've heard talk of obtaining mythology stones at lv45 to get some badass looking armor. What are the ways of obtaining these stones, and what's the fastest way? How long would that take?

3. Company seals. They can give decent armor at low level, and you get some cool outfits and can dress up your chocobo. Is there anything else I should be saving them up for in particular?

4. Is leveling alt classes easier than main? It feels faster. .

5. Outside of the friends I knew before I started playing, I haven't really made any new friends. I'm in framfrit and for the most part people seem a bit unsociable. Though it could just be me. Anyone have similar experiences?

And any tips, advice or gestures would be greatly appreciated!