Things about cSro you should know:
You begin with 20k SP and a 1+77 Weapon which is like 6D NPC Weapon, also a few scrolls and some more goodies (1 reverse scroll, few res scrolls, exp helpers and so on)
There are 2 Divisions, ppl said that Div 1 is more lagging then Div 2.
cSro is lagging alot for me, especially on day i have troubles on grinding, but it seems not to affect everyone.
Silks are buyable with PP > there are gamecards with points which can be purchased. Silks are a bit cheaper then in iSro.
There is a free bot (not looable with bad pick settings) and loopable paybot which has got bugs (only one programmer working on it).
cSro is an official Silkroad with 1x rates; however VIP servers grants 2x rates at every weekend for free (i suggest Ocean VIP to join on Div 2).
You will only gain free plvl till 30~ after it, you will have to pay for taxis on ice, you might find someone which do lvl you for free but dont expect it ..
Silkitems are buyable and sellable through stalls and stall network.
The most servers are kinda easy or populated, only few are crowded but still accessable; on Div 2 you can find a server which only got Chinese race charakters > no EU.
So much for now, if you got further questions feel free to ask..