... I want to offer my services of web design (redoxdesigns.f-sw.com) for free to members here, but i dont know where to post advertising this...
you dont advertise anything.....youll get repoted....its in the rules not to do so.
don't advertise on this site
technically i think you could put it on your profile and tell people you have something super awesome they need to see
You can post in your blog and link to that from your sig, I think
do not advertise third-party websites on UG.