As beginner and young driver, your first interest has to aim on reliability and safety for your first kilometers, there are a lot of good cars available, but what you would want to avoid is money depense in parts and be confident on your car even if you're making little mistakes.
The proportion of risks to get an incident/accident is very high at start and during few years (even never for some ^^), so the goal is simple :
- Reliability :
prevents you from early problems, you want to drive, not out of order on the border of the road (proved by looking on cars lovers websites with facts)
- Safety :
car has to be well noted on euroncap and to get all the safety organs fully functionnal and multiple
- Durable :
be sure that the car you will buy is well maintained and maintanable without too much money (parts can be expensive for low budget at start). Don't buy a dying car for low price.
And sure, as your first one, you will have a definitive relationship all your life with, as the first one you drived ;) , so choose also the design/look you would like it to have.
Good luck in your choice