I have recently started learning Microarray data analysis. Could anyone help me? or giving me some advice? thanks

I would suggest:

• have a look at the excellent limma user guide here (for all types of arrays).
• check the Bioconductor workflow for Affymetrix array analyses here. Note: all Bioconductor workflows can be found here.
• check this workflow at the F1000 site here (Affymetrix arrays).