Anyhow, finding the right pen was very important. I discovered that i am a huge fan of gel pens and after trying dozens of them i landed on pentel energel. I found them to have the best glide and feel and the 0.7mm felt perfect to me. Though i found others with better pigment(black, of course, not blue!) the energel was just the best overall.
Also, finding the right diary was very hard. You need the right paper texture, thickness, size, number of pages. It is very personal thing and for me it was very hard to find what i was after.
Lastly, I got into fountain pens. Actually that might have been the initial reason to get into writing, and i found there is little difference between pens and tips and is mostly about the right ink.
After decades, i finally made up a proper signature, so that was great.
And yeah, i recommend it. Get into pens, paper, writing and whatnot. You can only gain from the experience.