Classic Auto Air in 67 Barracuda Factory Non AC

I charged it myself. You turn the compressor to get the oil circulated in the compressor from what I understand. That’s part I forgot to do. So when I turned it on the clutch was real slow for a second then was fine. I rented the vacuum pump and gauges from Autozone. Watched a couple of YouTube videos. The first time I tried it I did not have an adapter for the Freon can I was supposed to have.