Greetings, phamquangtruc! I wish you a very fulfilling experience here on Steemit! All the Best
By the way, there are several groups you as a newcomer can join. They will stay with you for your journey, helping and mentoring along the way.
@greetersguild invite link https://discord.gg/AkzNSKx
@newbieresteemday invite link https://discord.gg/2ZcAxsU