I've only been using AGS for a month and a half and already my ability to make sprites and use the studio to make games has improved dramatically, and I had NO prior coding/sprite drawing experience. Just read the beginners tutorials (http://www.adventuregamestudio.co.uk/acintro.htm) and get to work.
However, you may want to make a short, basic game before working on that project that you mentioned. Like a game with only 3-5 rooms maybe. You should pick it up quickly.
However, you may want to make a short, basic game before working on that project that you mentioned. Like a game with only 3-5 rooms maybe. You should pick it up quickly.