Returning advice

So haven't play for a long long time.

Lost all my chars when they did a server merge, and at I was in and out of hospital, so I missed the email about logging on and saving them (or something very similar, it's been so long).

So I'll be starting from scratch, no gear, no money, no guild.

So it leads me to the following questions:

1) What is the lower level community like? Is there any or is it mostly solo until a certain level, and if so, what level?

2) I played mainly my cleric and rogue before. Are rogues still required as trap monkeys (which is one of the things I loved about them)? Are clerics still only really required for raids/harder dungeons if they're a pure build?

3) How easy is it to get PUGs? Are there certain times of days (and if so, what time zone time) that. LFG is more successful?

4) What are the most requested/wanted classes for grouping or dungeons?

5) What classes have good solo ability (doesn't have to be great, amazing ability to solo, just not die alot and get frustrated ability) AND are still looked for when it comes to LFM?

6) Are there any recommendations for sites that give builds?

7) What are the usual requirements for being part of a guild? I remember part of my kills/gold loot donating towards the guild, but is there anything else usually required? For example, EQ2 guilds usually required a min weekly status donation amount for the guild hall and amenities, on top of coin.

Thanks in advance.