Yeah I was myself surprised when recently I needed RSS feeds of a few parameters and was pleasantly surprised to see them still inplemented even with API’s on most of the sites.
Second that, it pulls data from a number of retailers and has localized sites with local retailers which is a nice touch.
Something I noticed is that if the item price can’t be displayed you can search around the item options and enter your own pricing to get a feel of the price of the system if parts would be in stock
I find learning from textbooks is more difficult then learning in an open forum discussion or not confined to the strict teachings usually provided by textbooks