This quick summary to answer Megha Maiya’s question - I am adding to the Wiki in case it can be expanded later useful for somebody else:
- expanded later
- useful for somebody else
Free resources #
There is HUGE amount of resources available for Linux and Unix out there. The issue is select those reasonably good
- List of lists: https://github.com/learnbyexample/scripting_course/blob/master/Linux_curated_resources.md
- http://ryanstutorials.net/, specially http://ryanstutorials.net/linuxtutorial/ and http://ryanstutorials.net/linuxtutorial/
- http://www.tutorialspoint.com/unix/unix-getting-started.htm
- (bash scripting) - https://bash.cyberciti.biz/guide/Main_Page
- free book - http://unixmages.com/ufbm.pdf - very beginner friendly
- list of free books: http://www.dailyartisan.com/news/open-source-e-books-for-linux/
- Eli The computer guy - https://www.youtube.com/playlist?list=PLD6B6473ACF32C59D (I like this one)
- YouTube channel - ultimate Linux tutorials - https://www.youtube.com/channel/UCn58SGUDUnUHRYKyNffHQrQ (from a generous Indian guy sharing his experience with the world for free. Not ideal audio quality, could use some editing - bot has lots of content)
- EDX courses - https://www.edx.org/school/linuxfoundationx
- http://www.tutorialspoint.com/listtutorials/linux/basic-concepts/1
- Wikibooks - https://en.wikibooks.org/wiki/LPI_Linux_Certification
Hands On #
Reading books and watching videos will have very little impact without trying things out.
I HIGHLY recommend
- install Virtualbox from Oracle (virtualbox.org)
- either create new virtual machine, download image and install Linux from scratch
- pick either Centos 6 or Centos 7 distribution
- or Ubuntu distribution
- or download ready-made VB image - http://www.osboxes.org/centos-7-image-virtualbox-vmware-available-x86_64/
and do a lot of practical exercises. The good free book covering installation is http://linux-training.be/linuxfun.pdf
Paid resources #
The advantage is that the content is usually better structured and easier to follow and also usually is targeting a certification exam.
- Linux Academy - $29/month - https://linuxacademy.com/tour - leads to certification
- Lynda - http://www.lynda.com/search?q=Linux, about $35/month, has 10 day free trial (RECOMMENDED)
- Cloud Academy - focusing more on AWS offering, ~ $50/month - https://cloudacademy.com/library/
- Udemy - “pay by course” - https://www.udemy.com/courses/search/?ref=home&src=ukw&q=LInux&lang=en
- Udacity - https://www.udacity.com/course/linux-command-line-basics--ud595 (some free courses)
- Sitepoint - lots of UI resources but also Linux. Good ebooks as part of membership: https://www.sitepoint.com/premium/topics/all?q=Linux&limit=24&offset=0&page=1&content_types[]=All&slugs[]=all&states[]=available&order=
Non-Server side #
As we discussed, no level of Linux system experience will help you if the Web app is having client side issues - broken JavaScript - and the request never reaches the server.
To get some experience with client-side browser based debugging try