A useful and easy way to start would be to read magazines in that area- articles, which are shorter than entire books, are often a good introduction to reading. Make lists of the technical terms that you're unsure of and read up on them, then go back and check you've got the term fixed in your memory. Practise explaining them aloud to yourself, even record it and play it back and see how well you've done. Get a basic text like of the guides for Dummies and read that as a simple starter in English. Have you got a technical dictionary on the subject? If not, get one.
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