Inversions help

Hello all. I'm new to this site, but I've been watching a lot of Andrew's youtube videos. I've played piano before, but I stopped when I was in grade 4 (piano grades). I learned a lot and I understand a lot of what he is saying. Where I got confused is when he started talking about inversions. I under stand them and all, but once you call them by their technical names like 6-4 or 4-3, i start to get very confused. I was recently watching his video on Modulation and I got lost when he said to play the 4-3 inversion in 2 (in D). If ANYONE can help me that would be great... I'm really stuck

nevermind i understand now i just went here and it taught me everything.