Yo, dude! First of all Welcome to LMSPW!
I will answer ur questions 1 by 1:
1)Fast lvl comes with killing mobs just like on pwi. If yo scot the forum you will see in the guide section a map that shows the lvl of the mobs. Kill as many as u need and do not waste your money on items until lvl 99. Until you reach that lvl, npc items are good enough.
2)Press "O" and item mall opens. You need cubi gold wich you can get in 3 ways:
a)Donate
b)Vote for them (check the voting page)
c)buy from auction
3)Every sunday at 18:00 server time there is invasion
4)Gear can be gained in 3 ways:
a)Buy from npc or craft by collecting materials and leveling ur crafting skills (or u can have some1 craft for u)
b)Donate for it (check donation page)
c)Droping from other players
5)Reputation can be gained from Donating or from exchaging sarriras. 1Sarrira = 100 reputation. Also you can get reputation from wedding candy.
6)Rank 8 is gained preatty hard

7)Atm Highest grade is grd 16 for wep/jew/armor
8)Heaven books and holy/hell books work. Nirvana skills don't.
9)This is a good comunity but if you play on 1000x you will get pk-ed a lot because it is a pk server. Has no safe mode. If you want to avoid that get accepted into a good guild wich can offer you protection.
If you have any more questions place them here or pm me in game. Nickname is Vyper!on
Have fun!