SAP offers lot of training videos and materials.
1. Where to find the videos of SAP business intelligence in SCN?
I searched under "Training and education", but i cannot find any. Please help.
2. Generally help.sap.com contains full set of tutorial, like the one given below,
Here we can find end to end SAP BI 7.0. But now its outdated.
I searched for such a tutorial in help.sap.com for 7.3 but i could not find one as good as for 7.0.
Where to find it?
3. The latest release from SAP is SAP BO 4.0 BI Suite, is there any official link where i can see the tutorial for each of the coponents of BO.
Searched in help.sap.com, i could get only "user guides" are they sufficient for the developers like us!!
You check BW 7.3 material in below link
for BO 4.0 sap help documents will be enough for to learn the tools and you can follow the Business Objects Spaces in SCN for more updates.
Check the below listed links
Hope this is what you are looking for
Please check the below links. I guess they will help you.