Han Solo isn't derived from a comic book. His character was created for the Star Wars movies and expanded upon in related media, but not from comic book sources. The Star Wars universe has its own complex development process that doesn't rely on comics for Han Solo's origin.
To my knowledge, there hasn't been a Rescue Solo comic. But the comic world is vast, and new ones are constantly emerging, so it's possible it exists but isn't widely known.
The Solo Leveling comic is indeed finished. It had a definite ending that concluded the various plot elements and character developments. Many readers are still discussing and cherishing it even after the finish.
The number of Solo Leveling comic books can vary depending on editions and reprints. It's best to refer to the publisher's information or dedicated comic book catalogs to get the exact number.
Yes, there are. Some movies draw inspiration from various sources but not directly from comic books. For example, 'The Truman Show' has elements of a fantastical world but isn't based on a comic.
Well, a blank comic book isn't really an actual comic book in the usual sense. It doesn't have pre-drawn characters, plot, or dialogue. It's more like a canvas waiting for your imagination to fill it up.
It depends on personal preference. If you're more into visual art and want to see the story's epic battles and cool characters in a more immediate way, the comic is better. For instance, the fight scenes in the comic can be really exciting with the detailed illustrations.