I’m so pleased! Very best of luck, too. Ink is awesome :) Yay!
With regard to getting the washes to reproduce on the computer, there are a few tricks: always scan in color to get the full tone of the washes (I quite often convert that to b&w in photoshop, but usually after I’ve done everything else); scan as a tiff, not a jpg; make sure you scan at at least 300 dpi (you can go higher - 600dpi would be required for a book - but 300 is totally fine for web/most mini comic situations actually tbh); adjust the levels. Once I scan in the image, I adjust the levels to make white white, and then the rest to… well, get it as close to the image I scanned as possible.
Finally, not all scanning programs/scanners are created equal. Someone else can probably weigh in with better advice than this, but I actually use Preview and I like it quite a lot (I used to use dedicated Epson software, but Preview is treating me better).
Hopefully at least some of that is helpful. I wish you the very best in your drawing endeavours!