AIX

Youtube does have a few videos on scripting if you just search for "bash scripting" or "shell scripting" and you can find some 101 online classes. There is nothing that I've seen focused on system monitoring (I didn't see specified what you need to monitor so I assume system)

something I keep on me is a book called "pro bash scripting" just in case I get stuck and need a quick reference. (this book often goes missing because other people like it as well)

One thing to note, since your learning scripting, I personally wouldn't start with monitoring "performance"
- Reason: shell scripting can be a bit tricky at first, a small mistake and you can run into a loop, where the system resources are being consumed due to a bad code in the script. (maybe not the best example there but once you start making mistakes, you'll see what I mean)

I would suggest with using the commands manually and understanding what each one does first. iostat and vmstat are my preference as bakunin mentioned.

If they are just asking you for report summary's on the servers usage, lpar2rrd as mentioned, is a great way to give them just that.
- Check out their site. bit tricky at times to setup, but once you finish management teams love it. plus they can check it whenever they want without asking you for a report.

I also do run nmon reports as well since it is more detailed (no one other than myself reviews these).

One of my personal fav. I view once every 6 months (if I can) is "HMCViewer"


for learning AIX, there is a sticky on the AIX page:

AIX Links



Before monitoring "performance" understanding the system and how it works is the biggest key. without this its more like building a house from the roof down.

IBM red books are free and very useful.

Hope this helps.