Use Cryptsy or bter
Cryptsy is slow and bter charges 0.1PTS per PTS withdrawal.
Rather use an exchange than trading with an individual.
Trade in small amounts so that if anything goes wrong you wont loose allot.
Download the PTS client, encrypt it, make wallet.dat backups etc. And send your PTS to the wallet. If your PTS are not in your wallet when a new DAC is launched you will not get shares in the new DAC.
This is still my mental stumbling block. How do PTS holders know when a new DAC is launched and are the new shares automatically issued without notification to the PTS wallet
So the blockchain technology allows for the tracking of who has what (the what is protected by your public key and is identified using your public key). For bitcoin the 'what' is money. Bitcoin uses the blockchain technology to record which public keys have what values of money.
The blockchain can be used to tack other kinds of information, such as who has what number of shares in an implementation(s) of an idea. Protoshares does this.
Invictus will reward all public keys that contain PTS with the equivalent of Bitshares. Invictus doesnt know who all the people are it just recognizes the public keys and rewards them.
You dont need to be online or aware that this is happening for it to happen.
For BitShares you would then download the BitShares client and point it at your PTS wallet.dat file and your BitShares will be loaded onto your account.