I'm a long long time fountain pen-ista.
I've been using fountains pens for almost 50 years, with some gaps.
For the longest time I thought I had to spend at least $80 (and this was over 20 years ago).
I like messing about with Nemosines, I think they have the most useful calligraphy nib for non-calligraphers.
I used to use Pelikans, but found they were too easy to lose with their soft weak clips. The cheap ones leak, the expensive ones jump out of your pocket.
Lately I've been using TWSBI, my current go to is the Eco EF nib,
Platinum Preppys and Varsitys are great pens.
After the Preppy nibs I don't think anyone makes a better nibs right out of the box than Pilot, but they don't hold much ink.
I'm both addicted to and often flummoxed by Noodlers Ink.
What I can offer:
1. I'm working on a Preppy eye-dropper conversion. (All conversions to eye-droppers end up leaky. I've decided to see if I can solve this.)
2. Cleaning. Well, my quick field fix for a clogged and skipping pen is to use a Plackers flossing stick. Lay it on paper, press the nib on top, don't floss too aggressively.
3. Notebooks. Here I might actually have something. I write a lot. What I've come up with is a letter sized (A4) notebook, 100 sheets, 200 numbered pages. The way the notebook works is I'm always writing on the right page. When I reach page 100 I flip it over re-insert it into the folder cover and continue writing page 101--200. (So as you look at a filled notebook opened up. The writing on the left side is upside down. )
I've designed page lines and dots in Illustrator, added the image to Filemaker Pro for page numbering, and can share it as a pdf, print two sides... (If you have an idea for a line or dot design pattern, spacing... I can probably make you a pdf likety-split. If you live in the civilized world I can make it A4)
I've got a bootleg method of using hot glue sticks and manilla file folders to create glue binding that works pretty good. (I rough up the edge of the paper, squiggle on some hot glue, put a file folder on top and then iron it flat with a standard clothes iron). Works pretty good. (I've made and used at least ten now)
If you take a lot notes, write a lot, I don't think there's a more useful cheaper option. The only thing commercial notebooks do better is slicker thinner pages.
If my messages are too long, I'm not a troll, just procrastinating doing something else.