Fishing?

[Zion]

I'm not exactly sure how fishing works, but I have a rod with a line and lure. Where do I go now, and what do I do?

[tristamizumi]

You also need a hook, as well as the pole, string, and lure that you already have.

Once you've put them all onto the rod, now you need to find a river or lake that has fish jumping out of it. These are fish nodes; just go to the shore (or if you're in a boat anywhere where fish are jumping), and click Adventure -> Fishing and left click a spot to fish there.

Fishing with a crafted lure can take a while before you catch a fish, but the lure lasts many uses. The alternative is to use bait like earthworms or leeches; these guarantee you'll catch something quickly, but they're consumed with each fish caught. Also of note, different fish are attracted by different things; for example, I recently went fishing with both bait and a lure. The bait (earthworms in this case) only caught me perch; the lure (poppy whatever) caught me brill and roach. Supposedly the quality of all the components also plays into what you catch, but I haven't done any testing on to this.

[weirdguy]

The changing phase of the moon shifts the type of fish caught with a particular bait at a particular location, so unless you're looking at the wiki, you'll probably have to experiment a lot to target a specific fish when and where you want it.