I was asked this same question about three years ago when my Nephew was looking for his first car... He wanted an Alfa 147 1.6 TS... He had been driving company vans two years previously so was starting to get "some" experience on the road.
I will give you exactly the same advice I gave him.
No... Do not buy an Alfa Romeo as your first car, You will end up fixing it more than you drive it and it will put you off the brand for life.
It's not that they are not reliable it is that they need constant input from the owner unlike other marques in order to keep them well maintained...
Without that prior knowledge of what a car feels like when something isn't quite right when driving it, an inexperienced driver can miss minor issues that can end up causing more and more damage to connecting parts and then it becomes a far more serious issue and expensive to repair.
Start off with something old and very simple to work on first, gain that "seat of your pant's" feel for a car first and then after a couple of years of doing your own work on the car and you can tell the difference between a missfire and a blown exhaust etc... Then you will be confident to own an Alfa...
You don't see people gaining pilot's licences and then getting straight into a an F15 Eagle do you?
Don't be silly
If you are desperate to own an Alfa... Buy a Brand New MiTo, at least its an Alfa and very reliable until you get confident enough and you don't have the worry of maintaining it for a couple of years.