For Links/Bookmarks I use Google bookmarks - https://www.google.com/bookmarks/ which surprisingly has not been killed and looks like might be left alone by Google. Other bookmarking services delicious.com & posterous etc all died in due time.
By using browser extensions and a 3rd party Mobile App. I am able sync/store all the links. Though I would love to be able to sync bookmarks to my org-mode notes. Looking at org-capture now to see if that could possibly work (https://github.com/alphapapa/org-protocol-capture-html)
Chrome Extension - https://play.google.com/store/apps/details?id=com.amlegate.g...
Firefox extension - https://addons.mozilla.org/ru/firefox/addon/fess-google-book...
Android App for Google Bookmarks (3rd Party) https://play.google.com/store/apps/details?id=com.amlegate.g...
I use a separate file for non-technical stuff.
TODO alone is a game changer imho.
I have a single file called "engineering-notebook" and I store pretty much everything in it:
- bookmarks to resources
- personal notes
- personal tutorials/step-by-steps
- cheatsheets
It works fantastically for me