Any suggestions?

Take about a month or two to just observe. It's a great community but not utopian, and a bit of knowledge will go a long way. Keep an eye out for listings of equipment with which you are familiar--either that you own and are thinking of selling or that you're interested in acquiring. It's a useful way to get a sense of price ranges, descriptions, etc.

Sell anything, just be honest with its description and fair with its price.
Buy something,check sellers feedback. Ask questions. Ask for photos and hopefully you will/should get a good deal. There is always a vast array of fantastic gear on here. Personally I think the majority of the people on this site are honest. I have only dealt with a few members who have been 100%. There are always going to be bad apples, but hopefully they are a very tiny percentage that use the site. Be lucky.

Be Honest: If your selling be conservative on your equipment ratings,If your buying ask as many questions as it takes to make it clear what your buying..Don't make an offer unless you intend to buy...Do your homework!!! This is by far the "Best" site for us Audio Cookoos!....Spend as much time on it as you can and learn...I can't say enough about how many Great helpfull people on this site......Welcome aboard !!!!!!

Myraj,

Surely you are not referring to yourself with 581 positive feedbacks are you?

I am sure you are more than qualified to answer the question.

If you want to speed up the learning curve, purchase the "Audiogon Blue Book subscription". It may be flawed and a sometimes a bit out of date, it's still relevant. Most newbies vastly over estimate the value of their gear. BE HONEST! Use the Audiogon rating scale acurately.