Origami diagrams have various lines that help you understand them, here are the most common folds you’ll find. If you are a beginner take a look at some simple origami diagrams and try to follow with these examples. Once you understood the basic folds you can try some more complex models.
Valley fold
Mountain fold
Fold and unfold (creasing)
Pleat fold
Inside reverse fold
Outside reverse fold
Squash fold
Petal fold
Sink fold
Here are some websites that might help you:
