-go to the appropriate section (handguns, ammo, etc). If you are selling a handgun go to the FOR SALE HANDGUNS section -click on NEW TOPIC towards the top-left of the screen -list your item that you are selling --to post a picture: click on "upload picture", "chose file", then...
bot_kick sv_cheats 1 sv_infinite_ammo 1 mp_freezetime 0 mp_maxmoney 65535; mp_startmoney 65535 mp_buy_anywhere 1; mp_buytime 99999; mp_weapons_allow_typecount -1; mp_limitteams 0 mp_roundtime_defuse 80 mp_autoteambalance 0 rcon bot_kick rcon sv_cheats 1 rcon sv_infinite_ammo 1 ...