I am glad to hear you are enjoying the game so far... (or at least have some hope :-))
Indeed this is a sandbox style game (IE Open Play)... Quests are optional to do, though there maybe some benefit to doing some of them, such as getting an extra stat point on the max but for the most part they are pick and choose, if you decide not to follow the quest storyline you wont be requried to but it may limit other quests that are available in the future for you. The other thing we try to do to ease the quests for people who are not questies. Usually quests are short and direct, there is not usually a lot of beating around the bush with them. Try to make all quests 10 - 30 min unless the quest is intended to be a puzzle type quest, as there are a couple.
We also spent much time on the pvp system in the game for players who enjoy good pvp. There are three main allegiances (good/evil/neutral) and we will be implementing a guild system in the coming months. PvP is totally open after level 30 right now, though we may consider having a 10 level rule between level 30 - 60. Though we will be testing it out first though...
On the payment method... For a basic account the game is free, You can create 3 characters and cannot purchase a house/property, you still get access to a shared bank between your characters. For a onetime payment of $5.00 you will be able to upgrade your account to a premium account and get 5 character slots and own a single property or for a one time payment of $10.00 you will be able to upgrade your account to an ultimate account and get 10 character slots and own up to two properties. Account upgrades should be ready by the end of July or beginning of August.
As far as the cash shop goes, there will be a limited cash shop that only sells convenience and lunxary items but nothing that would provide extra power that could not be gotten in the game by any player. For example we will be selling gold/experience at a relatively high cost, both acheivable if you are willing to spend a little time and enjoy doing that. Other types of items will include special furniture for housing or special dye kits.
We want everyone to have fun playing the game but in a balanced way. I would prefer a per month fee myself but unfortunately the market doesnt support it right now.
As far as bug reporting please use the page button to report bugs and post them to the player's helping player's forum that way they do not get lost.
Please let us know if you have questions while playing, we apologize for the incomplete player's guide. We are working to improve that.