Read the following subjects of one analog IC book:
1. CMOS basic device model.
2. Single stage amplifier.
3. Current Mirror.
4. Op-amp.
5. Comparator.
6. Bandgap reference.
Then you can start designing some circuits and pick up the others latter.
Design of cmos analog IC - Bahzad Razavi
analog design and layout - jacob baker
These 2 books are my favorite, by the way, Professor Baker's cmosedu.com
site is a good place to learn analog.