I had been wantinged to learn 3D modelling for a long time, but I didn'tnever bothered to start it. I had wanted to learn 3D modelling for a long time but never bothered to start.

Finally, I started to learning it several days ago. Finally, I started learning it several days ago.

Since you are still learning it, it's more appropriate to say "started learning."

I found a 7-day free course on Youtube and I have finished parts of it. I found a 7-day free course on Youtube and I have finished parts of it.

Alt: and have finished parts of it.

I have to say, 3D modelling is more interesting than I thought, although. However, it was a little boring at first because all you could do wassince you need to memorizinge the hotkeys and trying to get used to the basic operations. I have to say, 3D modelling is more interesting than I thought. However, it was a little boring at first since you need to memorize the hotkeys and get used to basic operations.