I know what I did when I was tutoring a surgeon for his specific field of work - he was supposed to give several very detailed presentations but he didn �t know English and I didn �t know his field, so I took out specific medical terms from the dictionary and wrote them on cards, with the dictionary explanation on the side, and then I asked him to explain to me what this word meant for him and how it was important in his work, and I made notes to myself about it, and he tried to express himself as best he could. Then we looked at quotes from other such books (in this case your tutorial) and little by little, day by day, he himself started figuring out the meaning using his knowledge of context, and knew how to ask me for unclear expressions, and I slowly learnt how to explain them to him. It was like making a puzzle, but not having all the parts the very first day, but then every time we put a part of the puzzle well, it was like the next day sb gave us 3 new puzzle parts, then 5, then 7, etc. It �s very hard at the beginning, because it has to be a 2-way process - you teach him English, and he teaches you graphic design, but it works eventually. It might help you if somebody from the field explained the tutorial to you, so I hope some experts step in here. Good luck to you...