While there is no "official" complete solution manual sold commercially for the second edition, several reputable academic resources exist:
While it is tempting to jump straight to the answer, you will gain more from the material if you follow these steps: --- Sheldon M Ross Stochastic Process 2nd Edition Solution
Since its release, the second edition has remained a staple in graduate-level statistics and probability courses. Ross excels at explaining: Both discrete and continuous time. While there is no "official" complete solution manual