Algorithms are just step-by-step algorithms for solving problems, and most of these problems have already been solved, tested and verified by someone. You can, of course, immerse yourself in the deep philosophy of the brilliant Knuth, study multi-page tomes with evidence and justifications, but do you want to waste your time on this? Open the beautifully illustrated book and you will immediately understand that algorithms are simple. And grokking algorithms is a fun and exciting activity.