There are many online sources of free information on this topic, eBay has a bunch as well. There are literally TONS of things available to sell out there, but you need things you can make a decent profit on, i.e. at least a 3x markup, otherwise it's not really worth the trouble of the work of selling.
For a whole lot of specific information, also see www.ebaywhiz.com.
Hope this helps!
Al
For ideas on what to sell on eBay which make high profit, check out http://www.waterhouseresearch.com
They find products on eBay which are making over 100% profit and selling more than 15 times every month. They also show you the suppliers. Join the hot product alert, it's free.
We prefer to sell new items as you can take the photos once, write the ad copy once and sell it over and over.
We have some products which we have been selling since 2005. We just keep buying more the supplier.
Be careful of locking yourself into 1 niche. We prefer to chase profit.
Alibaba.com
But beware, only send payments via trackable and safe methods like paypal.
garage sales. specialize in something like old watches
I am trying to find a new source of income I am disabled and need to find a way to supplement my income and was wondering if selling on ebay and amazon would be good but I need merchandise to sell. Anybody have an idea about this?