A solutions manual, used wisely, is a diagnostic tool. It tells you where your reasoning broke down. Used unwisely, it is a substitute for thinking, and that will not serve you in the long run.
The Gamelin Complex Analysis Solutions Manual is available in various formats, including: Gamelin Complex Analysis Solutions Manual
Before looking at the manual, spend 20 minutes with a blank sheet of paper. Try everything: draw contours, test series expansions, attempt a contradiction. If you are stuck after 20 minutes, you have permission to peek. A solutions manual, used wisely, is a diagnostic tool
Sites like Stack Exchange (Mathematics) have detailed discussions on almost every major problem found in Gamelin’s chapters. Searching for a specific problem number often yields a thorough explanation. Conclusion The Gamelin Complex Analysis Solutions Manual is available
: Many universities, such as UC Berkeley , have public archives of homework solutions that cover specific sections and problems from Gamelin's text.
For nearly every problem in Gamelin, there is a thread on Math StackExchange. While not a "manual" per se, the collective intelligence of these forums acts as a dynamic, interactive solutions manual.