Depends on the plane. At first it's tough, but after it you automatically memorize your most of your basic checklist. However, after doing my memory items I verify it with the actual checklist (we are human after all)
As far as radio calls go.. Depends on the airport and what runway you land to where your gate it. First time I flew into o hare I was nervous. I had to write down my taxi instructions and visualize it on the airport map. Now it's much much easier. For example if I landed 28c in o hare I know exactly what they will tell me to the gate.
This BA 747 got chewed out because he didn't follow instructions. They pretty much did a whole 360 to go back to the international gates.