Looking for some guide to 90 nm CMOS design

[Octago]

Now I've just gotten the design kit of 90 nm CMOS and I would like to try some circuits for interests.

But I am not familiar with high speed CMOS design, therefore, could someone give me some guide, nowadays, what are the interesting research topics in 90 nm CMOS design, in analog domain or digital domain?

Are there any good books or papers to be recommended on 90 nm CMOS design?

 

[lladnar23]

Look at gm/id design methodology. Stanford EE214 lecture notes, and there are some other papers on this as well.
The idea is to abandon square-law equations, and design based upon plots made from the technology.