Take very careful notes while making each cheese. Read this board a lot, and compare what people do with the outcome. Threads that fail to show the final cheese are often hard to interpret, because you don't know if it worked! After making a few cheeses, you'll get an idea (i.e. I think my curds are retaining too much moisture when they go into the mould), then you can read what people do to remove moisture and try something. Keep tweaking your last make until you get something that works (I copy my previous make notes, remove the details, and decide what bits I'm going to adjust, unless I'm trying to replicate of course).
It's all about guided trial and error, really.