Welcome to Garden Web, and the Seed Exchange. I am sorry but the link to the Special Instructions is not working at this time, but here is a part of it.

Per the instructions: The exchanges were created to facilitate the arranging of trades of plants and seeds between members. Please do not use them to solicit donations, ask for free plants or seeds, or ask for items in exchange for postage. All requests must be in the context of arranging a trade. If you have nothing to offer at this time, please wait until you do.

Since you are just starting out, I suggest you maybe reply to some of the many more recent sase/sasbe offer threads. Look for threads that say SABE, SASBE, or FREE. There are usually several recent ones at all times.

You might want to respond to those that are offering more than one variety, to get the most bang for your postage cost.
Read the Offer and post to the thread per the offerer's instructions.

You will then likely be asked to mail a BE (Bubble Envelope). These can be found at WM, the Dollar Store, CVS Drug Store, Office Supply places, etc. Depending upon the size of the envelope, you may be able to cut a large one in half and make two envelopes. Be careful though that you do not make them square, as opposed to rectangular, as that will cost extra postage when mailing it both ways.

Include in the envelope whatever you are instructed to send by the offering member.
It usually includes
A list of the agreed upon seeds (if they were agreed upon) or whatever the offering member requests of you.
A note with your member name, and your real name
A label of some sort with your name and address to be used when the envelope is mailed back to you.
Postage STAMPS...NO POSTAL TAPES as they are only good for mailing from the PO where they were purchased
The amount of the postage should be the actual amount the offering member thinks will be required, considering what they will be sending you and in what quantities.
There may be other instructions as well that have not been addressed above.

Please send the envelope out in a timely fashion, or let the member know if it is going to be delayed. Please let the member know if you have changed your mind about the SASE/SASBE offer. Often seeds are put aside for these sasbe offers, and if members don't follow through with mailing out their bubble envelopes, those are seeds being just tied up, when they 'could' have been shared and enjoyed by another member.

Once you receive your goodie package please let the member know that they arrived at their destination.

Last, but not least, try and take a moment to post a review for the offering member at the Rate and Review Forum. I have included a link to the forum below. Instructions for using the Forum are at the top of the main page there. Please be sure and do a search to see if there is an existing review for the member. If there is, please post to it. If there are numerous review threads, please post to the one that has the most replies.

Keep your eye out for new newbie or sasbe offers. I posted one today, looking for 2 newbies, and 2 responded. I will be posting another one in a few days or so, so be awatchin. One requirement I have though in my offers is to have at least the Seeds You are Looking For posted to you Member Trade Page List

Another important feature of the Seed Exchange is the Conversations side. This link can be found just above the first post on the forum. This is a great resource should you have questions about the Seed Exchange and will also help provide you with valuable information when you need a little advice. We are a friendly bunch around here and hope that you enjoy Garden Web as much as we do!

Happy Gardening!
Diana/ollierose