The best way to reach me is by email:
I read everything, though replies may take a few days during teaching weeks.
Corrections. If something here is wrong, out of date, or explained badly, I would genuinely like to know. Android Studio changes often and material ages — a tutorial that was accurate two years ago may send you looking for a styles.xml that no longer exists. Tell me which page and what you found.
Questions about the articles. If a tutorial left you stuck at a particular step, say which step and what you saw instead. That is usually enough for me to work out what is missing from the explanation, and it often improves the article for the next reader.
Requests. If there is an Android topic you are struggling with that is not covered here, it is worth asking. Most of the articles on this site exist because a student asked the same question more than once.
If you are taking SPG 0562, use the normal channels for anything about assessment, deadlines, or grades — those need to go through official routes rather than email, so there is a proper record.
Email is fine for questions about the material itself: something in a lecture that did not make sense, or code that will not compile.
This site publishes teaching material for Android programming. It is run by one person, not an organisation or a company.
The slides and articles are written for a university course and shared publicly in case they are useful to others learning the same material.