Do you have any suggestions for first time ticket sellers?
Yes, read thru this post, this one and this one, and this tag - they all have a lot of important info for sellers and buyers!
Beyond those tips, here are other things to keep in mind:
Don't be shy about asking bigger accounts/UAs to post your ticket, most are happy to do so.
Make sure you know when your ticket can be transferred, if transfers aren't yet available, and be clear about that to whoever is interested in the ticket.
Trust your gut, if someone is being sketchy be careful
As a seller, you have most of the power, and the buyer is the one taking the bigger risk, so just be nice, clear, and to the point - if they suggest something you aren't comfortable with, clearly communicate your terms, just be kind.
Be careful with trades. Since there's no monetary exchange, a lot of scammers say they'll trade tickets, but then never send you theirs.
The way the sales work if you're selling directly to the fan is essentially in 2 parts. One is the ticket transfer, and the other the monetary exchange. They happen in separate platforms.
For the monetary $$ exchange:
They will need your PayPal email address in order to send you the money - make sure it's the correct one, and the spelling is correct!
You may need their PayPal email address - make sure it's the correct one, and the spelling is correct!
I recommend always using PayPal Goods & Services - it's the only way you and the buyer have any sort of protection on the purchase.
Sometimes PayPal withholds funds for 1-3 business days, or releases funds in increments over the span of weeks. They may also block your/the buyer's account if you/them have not used it recently, so make sure the account is in order and working well.
You will need their Ticketmaster (or AXS or Live Nation) email address. Make sure it's the correct one, and the spelling is correct!
How to transfer the tickets to the buyer:
Go to the Ticketmaster app/website, find the ticket(s) you need to send them, and click Transfer. It will prompt you to write their email address, click confirm, and send. Ticketmaster will then email the buyer the ticket transfer. The buyer has to go to the email and click accept. At this point the transfer will be complete and your ticket will have left your Ticketmaster account and went to the buyer's.
Please note that during this exchange you will both see each other's names and emails as they appear on your accounts.
If you're selling via Ticketmaster's resale, or a 3rd party reseller website, simply list the ticket you need to sell, and they will do most of the work for you (for a fee). For the 3rd party reseller, you will still need to transfer the ticket from your Ticketmaster account to the buyer's using the email they provide via the 3rd party website - the steps are the same as above for the transfer.
Make sure to read thru Ticketmaster's resale section to learn more about that process if selling thru them. (link)
Please note: these tips are more comprehensive for the US market. Although the process is very similar in other countries, it can differ slightly. Make sure to google Ticketmaster's policies for your country regarding transfers and resale.