I currently have one budgie. I wanted to get another budgie to keep her company while I am away at work. Is it best to get another female? I don't want to get a male as I don't want them to breed. I also understand there is a quarantine process. Any advice would be helpful. Thanks!
If you really want to get another female, then you have to take in consideration your Cloud's temperament/personality and when choosing the potential new friend, to pay close attention to the behaviour when interacting with the other budgies. You should go for the budgie who seems to be overall sweet tempered.
Be aware that regardless of gender, there may be the chance that your budgies aren't compatible and you will need to house them on separate cages indefinitely.
As for quarantine and proper introductions, these links should be helpful: