Fishing Guild Leader Santiago:
Well.. practice is... practice, what else? You'll be having a go at fishing. Find a fishing dock, and use the fishing tools to catch a fish.
Well, I'll give you the things you need. Your goal is to catch 5 Practice Fish. If you succeed, you won't be a complete newbie anymore.
Oh, remember that practice fish can only be caught using the practice bait I'll be giving you. It isn't worth much, but you'll catch them faster than normal fish, and that makes them perfect for practice!
Good luck to you, then!