Hi, Speedy and welcome to the forum! Budgies are wonderful little birds! I call them 'flying jewels' because of their beauty and brilliant colors. I currently have seven of them, all rescues, of course, as I don't believe in buying babies from breeders so I would wholeheartedly recommend you adopt too. Budgies are truly very underappreciated. It must be that they are little and cheap but their intelligence and beauty really does not deserve anything but the highest regards. My husband, who is not really a parrot person, loves them to pieces and refers to them as 'the pretty ones'
Now, although taming them is entirely doable, the truth of the matter is that they are intensely flock-oriented so they normally don't really enjoy a life as a pet. The only ones that talk are the males and, for that, you have to raise it and keep it in isolation - a terribly sad fate for a highly social little bird that wants nothing more in life than to live with other budgies. So, although it is doable, it's not something that I recommend because, to me, their wellbeing and happiness comes first.
But, if you have your mind set on it, adopt a young one (I found two 3 to 4 months old ones in CL), make sure it's a male (remember that baby budgies cere color is the opposite of when they are adults) and tame it, first. Once he is 8 months old, get him a female friend so you can have what you want: a little pet bird - and he can live a more fullfilling life with a mate.