I'm a third-year undergraduate looking to tackle some math I wanted to learn a while ago: Diophantine Equations. I spent some time researching how to solve ceiling and floor type of problems, and know about Hilbert's tenth problem states that not all diophantine equations can be solved generally.
In my effort to learn more about these types of useful equations, can someone recommend me a book or two on solving Diophantine Equations? Books on this subject or ones that are very closely related are all acceptable.