How motivated are you?
Your knowledge of written Japanese - do you know the basics? Have you read Richard Hunter's "Just Enough Japanese" series?
Topic - does it excite you?
Your Go strength
Book contents - lots of diagams or lots of text
Main suggestion - start with something simple = "basic Japanese", easy Go and lots of diagrams.
You only need subsets of the kanji to read Go books - the question is how much? I found that I could use Adobe Acrobat Reader (free) to extract the text from some six Go book PDFs and I wrote some code to:
- check the extracted text
- extract the kanji
- check their frequency.
The number of different kanji ranges from 572 to 1254 in the books I have. You could get a lot out of the books with a subset of these kanji, so far I have only analysed single kanji in the text rather than compounds.
You are going to have learn hiragana, katakana and some kanji. You don't need more than a few hundred kanji, it all comes down to which ones. A knowledge of some 250 kanji will cover 90% of what is in a basic Go book.
Warning - Studying these books is still hard work - just buying a few PDFs won't make you a stronger player. You may well become stronger by <dare I say it> buying Maeda's Tsume Go, now in two volumes, and studying that or by buying "Games of Shuei" in English and putting in the same number of hours! <Studying Shuei on a real board can even help you find your glasses>
However MOST of the Mynavi PDFs allow you to select-copy-paste text, which opens up lots of opportunities. There are online translation services such as DeepL and Google, which are far from perfect <English understatement> but they will get you off to a quick start - which for many is what matters. I would describe myself as "linguistically challenged".
If you want to play around with select-copy-paste the text into either Google Translate or DeepL then it is much easy to buy a PDF that allows this, rather than having to buy OCR software as well.
Suggested book for starters - smallest number of kanji
Title = 石の効率がぐんぐん良くなる本 by 依田紀基 (A book that will make your stone efficiency soar!) by Yoda Norimoto
Title = 碁が強い人はどのように上達してきたか?by 洪清泉 (Hon Seisen)
The author runs a dojo in Japan and some 400 students have passed through, he looks at the 15 who made it to professional - what did they do?
Title = 古碁×AI 秀和と秀策に学ぶ勝負術
AI and Old Go - Ohashi Hirohumi 6p and Terayama Rei 6p.
Take Care - John