You can either buy the scrolls from npcs that are scattered randomly near monsters, but that requires alot of travel. Or you can buy scrolls from other players in the Free market, but those are pretty pricey. I usually just find scrolls from the monsters i kill. I found alot during the 2x drop event. I level up mostly by doing quests, they can be annoying but you can get rewards and such. Grinding takes forever, but that's basically what quests ask you to do, so i might as well just do the quests and get the rewards they give me, plus the exp you get when you turn in the quest.
Mano, the rainbow colored shell snail is near lith harbor, if you check your map i think he is in Thicket by the Beach 3.......3-4 screens right of Lith Harbor. He might or might not be there. You can change channels until he spawns there. He is usually up the ladder. He isn't hard to miss. He is huge XD
Yah I don't spend real money on nx cash. It's a waste. I got lucky because nexon had a roll back and gave us free nx cash only 5k though. But with it, i got a random hair change coupon, and i got the hair I wanted. So it was all good :3