How to maintain private(Company), friends and public and Knowledgebase?

I wear multiple hats. I am a developer, software teacher and each day I learn a lot of things and tend to forget them?
I want to keep track of self-updates that I easily RETRIEVE it from office or home or if possible from mobile.
Some knowledge I want to keep private, share with the selected group and some with the public.

Topics:-
1) Errors & solutions - Private to me
2) Interview questions & solutions:- I keep interviewing on different technologies and wish to record Q&A - open to public
3) Best Practices in Programming - where i could receive updates from outside world
4) Keep track of teaching updates from students and friends
5) My Idea Logs and Suggestion from public
jgdvishnuSoftware ArchitectAsked:
Who is Participating?
I wear a lot of hats...

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Mark MurphyIT ConsultantCommented:
You could use something like Joomla to manage the information, and provide login's to your students and anyone else who wants or needs access to the info.
Mark MurphyIT ConsultantCommented:
That's not a Java or Microsoft specific answer, but your question is not really specific to Java or Microsoft.
CEHJCommented:
Yes, any decent CMS should do that for you. Make sure you have captchas in place if you invite public (without login) participation or it will get abused
Rob HensonFinance AnalystCommented:
How about MS OneNote??

You can use it like an old fashioned scrapbook, copy and paste images or just type stuff in, add links to websites etc etc.

I think you can set parts of a OneNote file as Private and other bits as shared but not used it massively myself.
Mark MurphyIT ConsultantCommented:
One Note is nice, but you will need a Sharepoint server to share the OneNote file, and I think the granularity of privacy will be at the OneNote file level, so you will have to have a seperate file for each different sharing scenario.
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