Welcome ninjabuddha.
Cjd has some good points.
and
ebay is good, but,
ebay can be time consuming. You can get (pay) someone to sell your stamps on consignment for you on
ebay. I am not sure of where to send you for that though, sorry.
I like stamps, so the longer I spend on
ebay with stamps, the better. To sell at a fair or even good price you must know what you have so you don't lose out when selling through lack of knowledge.
And as Cjd says, there is a vast world of stamp knowledge that is very hard for one person to know all. It is good to have a team or a family so to speak that knows a lot when all together. But that takes time also sometimes.
If
ebay or some such method is a choice then lots and lots of scans or sharp photos are your best bet. Then, even if you don't know what you have, others will be able to tell (most of the time) from your good photos.
Older expensive stamps need a personal eyeball expertizing to detect fakes, forgeries, repairs or hidden damage sometimes. Sometimes people here can give an opinion.
The better the condition, just like a car or house, the better the price.
There are lots of opinions of stamps also.