Learn Spanish (Latin America): Utilizo mi laptop para trabajar.

Both utilizar and usar mean 'to use' and are largely interchangeable. Utilizo can sound slightly more formal, emphasizing utilizing a tool for a specific task, but in everyday Latin American Spanish, you can absolutely say uso mi laptop with the exact same meaning.

Why is it para trabajar and not por trabajar?

This is a great refresher on por vs. para. We use para here because it expresses purpose or a goal, translating to 'in order to'. When you perform an action (using the laptop) with a specific outcome in mind (working), para is the correct choice.

Is the English word laptop commonly used in Spanish?

Yes, in most of Latin America, the English loanword laptop is extremely common in daily conversation. It is treated as a feminine noun (la laptop). You will also hear la computadora portátil, but laptop is perfectly natural. Note that in Spain, they typically say el ordenador portátil.

Why isn't there an extra word for 'to' before trabajar, like para a trabajar?