It's my second day on Playo

Since it's your first time, the Playo system might seem a bit difficult. You can earn Gems by posting on the 'Play Games' community, commenting, and so on. For games, people usually aim for Time Quests that give a lot of Gems. After accepting a Time Quest (you can have up to two active at a time; once you complete one and claim the reward, you can accept another), install the game, play for the duration required by the Time Quest within the given time limit, and then you must click 'Claim Reward' to receive your Gems. Also, you can level up by accumulating experience points from gameplay or experience items from chests. The higher your level, the more Gems you'll earn for the same activities. Community activities can be done in 'Free' or 'Board' sections, but nowadays, posting and commenting on the 'Board' is the best way to get Gems, more so than 'Free'. Playo manages and provides 'Benefits' daily. You need to go to the community's distribution history and click 'Claim Benefits' to receive them. I've just shared what comes to mind for now in this comment.

Whoa.. IceAfricano said everything I wanted to say before I could even get a word in.. lol

The best way to get gems is through Community Benefits. Focusing on this is highly recommended. Also, since your level is still low, doing Time Quests and Hidden Quests is a good idea. For leveling up, you'll automatically gain experience by completing daily quests, time quests, and hidden quests. Using the experience potions obtained from opening treasure chests is also a good option. (Though, getting gems or coins from treasure chests is the best outcome.) You might wonder what coins are for; collecting gems isn't the only goal. You can exchange 100 gems for 1 coin, and then use coins to purchase gift cards. You can buy gift cards from the Coin Shop located under the Board Shop at the bottom.

Prioritize the main quest.