For studying shortest path algorithms in Algorithms, it is recommended to try out Active Recall. Create flashcards or quizzes for the material you want to remember and practice recalling the information from memory. The recommended time to study is for 2 hours and 30 minutes on a Thursday at 11:21 AM. Additionally, Mnemonics is effective because it helps in memorizing complex concepts, and Flashcards are effective because they aid in retaining information for a longer time. Pomodoro is ineffective because it's a time management technique and not a study method.