When i started my town, I asked a few questions on a forum, somebody gave me this list of all the commands that are useful for town building. I am simply copy and pasting AlbatrosV5's post.
/resident Show infos about yourself
/resident ? Show a list of /resident commands
/resident list Show all Towny residents
/resident friend add/remove [resident] Add/remove friend (match)
/resident friend add+/remove+ [resident] Add/remove friend (exact name)
/resident friend clearlist Delete friends list
/resident set Show all "/resident set" commands
/resident set perm Show all /resident permission options
/resident set mode Show all /resident mode options
/resident set perm clear Clear /resident permisions
/resident set mode clear Clear /resident modes
/resident delete [resident] delete resident info
/town ? show a list of town commands
/town list show a list of all towns
/town show informations about your town
/town [townname] show informations about a specific town
/town here show infos about the town you are currently visiting
/town spawn teleport to your town`s spawn
/town spawn [townname] teleport to a public town
/town leave leave your town
/town claim/unclaim [outpost/radius/auto/all] claim or unclaim town blocks
/town deposit/withdraw [amount] deposit or withdraw credits from the town bank (residents can use the deposit command to donate to their town)
/town new [townname] [mayor] create a new town with a certain mayor
/town delete delete your town
/town delete [town] delete any town
/town add/kick [resident] add/kick resident to/from town (match)
/town add+/kick+ [resident] add/kick resident to/from town (exact name)
/town assistant add/remove [resident] add/remove resident as assistant (match)
/town assistant add+/remove+ [resident] add/remove resident as assistant (exact name)
/town set show a list of town set commands
/town set [board/mayor/homeblock/spawn/perm/taxes/plottax/plotprice/name] Set town options
/town set perm show town permission options
/town toggle show "/town toggle" options (explosion/fire/mobs/public/pvp)
/plot show a list of plot commands
/plot [claim/unclaim] claim or unclaim plot (for residents the comand to buy a plot that is for sale)
/plot [forsale/notforsale/fs/nfs] set a plot up for sale/not for sale
/plot set set a plot up for auction
/townyworld show infos about the Towny world
/townyworld ? show a list of townyworld commands
/townyworld list show a list of all worlds
/townyworld [world] show infos about a world
/townyworld set show a list of townyworld set commands
/townyworld set show world set options (claimable/pvp/usedefault)
/townyworld show global property (wildperm/wildignore/wildname/usingtowny)
/towny show Towny help
/towny ? show a list of towny commands
/towny map show a Towny map of your location in the world (handy for TAs, Mayors and residents to look for plots that are on sale)
/towny prices show a list of Towny "create new town" and "daily town upkeep" prices
/towny universe show general info about Towny
/towny v show Towny version
/towny war show war status (stats/scores)
This really helped me in making my town, enjoy and happy town making.