Computer geek; done a lot, learned a lot, willing to share.
In addition to answering questions, I use this site as a knowledge base for documenting problems I've encountered and solved.
Q&A for professional and enthusiast programmers
Q&A for computer enthusiasts and power users
Q&A for enthusiasts and power users of the Android operating system
Q&A for people studying math at any level and professionals in related fields
Q&A for engineers, producers, editors, and enthusiasts spanning the fields of audio, video, and media creation
Q&A for software developers, mathematicians and others interested in cryptography
Q&A for students, researchers and practitioners of computer science
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Q&A for power users of Apple hardware and software
Q&A for professional system and network administrators