Are there any sites that offer free assistance or suggestions for English papers? I'm thinking of tutors or skilled professionals.

Answer 1

This is an excellent tutorial you can use:
http://ctyjhu.org/cdw3/

And here are some websites:
http://owl.english.purdue.edu/handouts/general/index.html

http://leo.stcloudstate.edu/catalogue.html

http://grammar.ccc.commnet.edu/grammar/
and
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http://www.powa.org/

http://nutsandbolts.washcoll.edu/

http://www.lousywriter.com/