logic/design for storing achievments and progress for users

I have a game with a databse of users, I now want to implement unlockable achievments in my game. How would I best go about saving this data for each user? I am still fairly new to using a database. Relevant info: - Each user in the users-table has an ID - There are 30+ achievments - Many achievments are longer processes, that require the ability to save the progress of that achievment for users, ex: Win 8 rounds in a row. - When the game is started it should load all finished/unfinished achievments as well as progress for each. I don't even know where to start, any sort of help is appriciated.