All the advice you need to get you started is here.
The phonostage setup is important. I'm sure you've set it to MM cart, but you can make capacitance adjustments starting with 47pf, then trying 100pf or 300pf. Your unit will have some similar settings.
A lot of members have been posting about starting with a Pro-ject Debut Carbon as a first TT. To answer one of your questions, many have upgraded to the Ortofon 2M Blue or higher which is a substantial increase in SQ.
The phonostage setup is important. I'm sure you've set it to MM cart, but you can make capacitance adjustments starting with 47pf, then trying 100pf or 300pf. Your unit will have some similar settings.
A lot of members have been posting about starting with a Pro-ject Debut Carbon as a first TT. To answer one of your questions, many have upgraded to the Ortofon 2M Blue or higher which is a substantial increase in SQ.