Increasing the resolution of a sensor by using an amplifier
A x10 amplifier will give you 1mV/deg, a x100 will give 10mV/deg. The latter is better suited to the range of voltages you may want to read. The former will give you the decimal point in the right place if you are reading on a mV range.

The op-amp block that will be simplest to use for your application is a non-inverting op-amp. Search and there will be more than you can shake a stick at. For instance https://en.wikipedia.org/wiki/Operational_amplifier_applications#Non-inverting_amplifier

If you want to know which particular amplifier to use, then the choice is more down to what's available in your local supplier, than what's the perfect one to use.