There is a graphical frontend for postgresql, the pgadmin. This is a frontend that pretty much do anything, and really depends that whether you have enough privilege to do certain task.
Here you can write procedure, create(and drop) database, create tables, create schema, privilege etc.
To create a table on your database. it is a matter select your database on the left side. then under the schema, which should be public, unless you created other schema. Then under it is a set of many thing, that I am unsure of.
You can create a table by right click on tables, and click new tables
And it shows a table editor. Which make life easier for gui oriented user.
To install pgadmin 3 on ubuntu.
apt-get install pgadmin3