Need Help in Moving from ABAP to NW Portal Development

Hello Experts,

I am ABAP Programmer. I am not having JAVA background and intrested in Portal Development. I had found following courses:

JA100, JA300, JA310, SAPEP, TEP12.

Please let me know whether these shortlisted courses are correct or not. If not, please give me correct sequence of courses.

Thanks in Advance.

Regards,

Nilesh Pawar.