If it's a budgie your on about then yes I would recommend getting 2 of them if your going to be out the house a lot. They are very sociable birds and should always if possible be with another budgie. Again they are very loud birds which can get very annoying at times especially when they're having a good old conversation with each other as the sun rises

.
A lot of people leave the cage door open so that they can fly around the room.
They are easy birds to tame and with a bit of time spent with them you'll soon have them sitting on your hand. It's always harder to train/tame them when there's 2 of them though.
If you do decide to get just one then I'd suggest putting a small mirror in the cage just to give him/her something to talk to and play with.
I trust you found this helpful. If you need any more information about anything just let me know. There was another recent thread about budgies. Might be worth having a look.
Thanks!