Down load the client
Create an account
Subscribe / pay a monthly subscription
Add the boosters - Time of Legends / High Sea ( Which I highly recommend and it comes with an extra character slot)
Then you can add bank and house storage an extra character slot for 7 total
Also a couple other add-ons like kings collection etc that just add extra pixels to your subscription
start here and pick which client to use
uo.com
Then here
The Account Management Site for Bioware Mythic Games
accounts.eamythic.com
then here
https://signin.ea.com
then here
Explore PC video games available for download right now. Electronic Arts is a leading publisher of games for the PC, consoles, and mobile.
www.origin.com
type in Ultima online in search for the items to purchase paste and copy the code to your account under account management
Pick a shard in your region or ask others for help in Uhall