Copperplate calligraphy is (at least for me) harder than brush calligraphy. I used to think that it's something only professional calligraphers can do. But after trying it myself, I think it was a silly thought! Come on, it's just a pen. You're writing with a different pen, that's all. You just have to get used to the new pen and... write away!
What you need?
I'm new at this too, so before starting this thing I asked the seller's recommendation for a beginner like me. She said that there are two kinds of pens: fountain pen & dip pens. Fountain pen has an ink cartridge attached to the nib. you fill it with ink and you can start writing. Dip pen only consists of nib & holder. You dip the nib in ink, and start writing. I use dip pen: Tachikawa T-25 holder & Baignol & Farjon 190 nib.
I haven't tried a lot of ink, but I found out that you can use watercolor solution too! Cheap and colorful but transparent (don't add to much water). I also use Parker Quick for the black ink but I found it smudgy on some papers. For metallic ink , I use Gouache Extra Fine Quality from Talens. There are a lot of color selections, I used the light gold in the picture above. It looks good on black paper!
I tried writing on several kinds of paper, and I find smooth paper is easier to write. But there are some papers that are easily scratched by the nib even when I give it a very slight pressure. Find various kinds of paper in your home and have fun!