A standard curriculum in numerical analysis covers several foundational pillars. The Dutta and Jana text thoroughly addresses each one.

Solving initial value problems using: Euler's Method Runge-Kutta Methods (RK2 and RK4) Finding the "Free PDF" and Alternatives

Even if you cannot find a today, you can still ace your exams using the following strategy:

which are commonly circulated for "Introductory Numerical Analysis". University Repositories