The following web resources are highly recommended:

On learning abstract algebra:
www.d.umn.edu/~jgallian/advice.html

Flash cards for the abstract algebra book:
www.cps.brockport.edu/~tuzun/gallian.html

True/False quiz for abstract algebra:
www.d.umn.edu/~jgallian/TF/

Software for the computer exercises: www.d.umn.edu/~jgallian/msproject06/project_xukai.html

More:
www.d.umn.edu/~jgallian/