Pick all iron(hunting) misions from terminal.Daikiba/shinkiba, molisk,cornundacauda,argonaut,merp and kerberos are mobs with iron missions. Check mobs,locations and loot at entropiawiki.com and good luck
My advice if you dont have a mentor already is to get one.
Pick one from your timezone or one that plays the same hours as you that has been in the game a while. Its nice to have someone that can advice you on weapon setup, armor, mobs and locations
Come and join the discord channel (thread here) - there are many new players who have been or are going through the new player experience right now, along with a few experienced players, who will be able to help you