Silkroad SP trick
While there are many diffrent ways to obtain and spend SP that you obtain, this way is very efficient. First, you have to get the skill you are working on to your current level number. An example would be if you are level 10 then have your mastery at level 10. Once you do that, go around and kill MOB's and get some SP. Once you have enough to upgrade a skill, DON'T SPEND IT! This part is very important, because if you do, then you do not obtain SP as quickly. The way this works is the more SP that your character has at the time, the quicker they can obtain SP in the future. You can keep on using this method until you feel like upgrading a skill, or you can just keep on going for as long as you want! This is also good because if you level up alot and don't spend SP, you can get everything you need at a higher level.