Create a table.
  
  Syntax:
   CREATE [GLOBAL TEMPORARY] TABLE [schema.]table (
      column datatype [DEFAULT expr] [column_constraint(s)[,
]] [,column datatype [,
]] )
         [table_constraint [,
]]
           [table_ref_constraint [,
]]
              [ON COMMIT {DELETE|PRESERVE} ROWS]
                 storage_options  [COMPRESS int|NOCOMPRESS]
                [LOB_storage_clause][varray_clause][nested_storage_clause] [XML_type_clause]
                    Partitioning_clause
                       [[NO]CACHE] [[NO]ROWDEPENDENCIES] [[NO]MONITORING] [PARALLEL parallel_clause]
                          [ENABLE enable_clause | DISABLE disable_clause]
                             {ENABLE|DISABLE} ROW MOVEMENT
                                [AS subquery]
   CREATE [GLOBAL TEMPORARY] TABLE [schema.]table (
      column datatype [DEFAULT expr] [column_constraint(s)[,
]] [,column datatype [,
]] )
         [table_constraint [,
]]
           [table_ref_constraint [,
]]
              [ON COMMIT {DELETE|PRESERVE} ROWS]
                 CLUSTER cluster_name (col1, col2,… )
                [LOB_storage_clause][varray_clause][nested_storage_clause] [XML_type_clause]
                    Partitioning_clause
                       [[NO]CACHE] [[NO]ROWDEPENDENCIES] [[NO]MONITORING] [PARALLEL parallel_clause]
                          [ENABLE enable_clause | DISABLE disable_clause]
                             {ENABLE|DISABLE} ROW MOVEMENT
                                [AS subquery] 
   CREATE [GLOBAL TEMPORARY] TABLE [schema.]table (
      column datatype [DEFAULT expr] [column_constraint(s)] [,column datatype [,
]]] )
         [table_constraint [,
]]
           [table_ref_constraint [,
]]
              [ON COMMIT {DELETE|PRESERVE} ROWS]
                 ORGANIZATION {HEAP [storage_options] [COMPRESS int|NOCOMPRESS]
                              | INDEX idx_organized_tbl_clause
                              | EXTERNAL external_table_clause }
                [LOB_storage_clause][varray_clause][nested_storage_clause] [XML_type_clause]
                    Partitioning_clause
                       [[NO]CACHE] [[NO]ROWDEPENDENCIES] [[NO]MONITORING] [PARALLEL parallel_clause]
                          [ENABLE enable_clause | DISABLE disable_clause]
                             {ENABLE|DISABLE} ROW MOVEMENT
                                [AS subquery] 
   CREATE TABLE [schema.]table OF XMLTYPE [XML_type_clause]
storage_options:
   PCTFREE int
   PCTUSED int
   INITTRANS int
   MAXTRANS int
   STORAGE storage_clause
   TABLESPACE tablespace
   [LOGGING|NOLOGGING]
idx_organized_tbl_clause:
   storage_option(s) 
   {MAPPING TABLE | NOMAPPING}
   [PCTTHRESHOLD int]
   [COMPRESS int|NOCOMPRESS]
   [ [INCLUDING column_name] OVERFLOW [storage_option(s)] ]
nested_storage_clause:
   NESTED TABLE {nested_item | COLUMN_VALUE}
      [ [ELEMENT] IS OF TYPE (ONLY type) ]] |  [ [NOT] SUBSTITUTABLE AT ALL LEVELS ]] 
      STORE AS storage_table 
         [RETURN AS {LOCATOR|VALUE} ]
XML_type_clause:
   [XMLTYPE [COLUMN] column [STORE AS OBJECT RELATIONAL] ]
       [[XMLSCHEMA xmlschema_URL] ELEMENT {element |xmlschema_URL#element}]
   [XMLTYPE [COLUMN] column [STORE AS CLOB LOB_Segname (LOB_Params)]]
       [[XMLSCHEMA xmlschema_URL] ELEMENT {element |xmlschema_URL#element}]
   [XMLTYPE [COLUMN] column [STORE AS CLOB LOB_Params] ]
       [[XMLSCHEMA xmlschema_URL] ELEMENT {element |xmlschema_URL#element}]
external_table_clause:
   ([TYPE access_driver_type]
      DEFAULT DIRECTORY directory [ACCESS PARAMETERS {USING CLOB subquery | (opaque_format_spec) }]
         LOCATION (directory:'location_specifier' [,directory2:'location_specifier2'…)
         ) [REJECT LIMIT {int|UNLIMITED}]
Missing from this page are the options for creating OBJECT TABLES - see the Oracle docs for this.
To create a table requires the CREATE TABLE privilege plus enough quota on the tablespace where the table is to be created.
Examples
create table SIMPLE (MY_NUM number primary key);
create table COPY_OF_EMP as 
select * from EMP;
 create table EMPTY_COPY as 
select * from EMP where 1 = 0;
  create table ACCOUNTS(
  AC_ID_PK number primary key,
  AC_STATUS number,
  AC_COUNTRY_ID number default 44,
  AC_CREATED date default sysdate, 
  AC_ACCOUNT varchar2(50)
  ) 
  tablespace DATA; 
  create table SALES(
SA_ID_PK number primary key,
SA_PRODUCT_ID number not null,
SA_DATE_PART date not null,
SA_COST number (12,2) not null
)
partition by range (SA_DATE_PART) (
partition P01_JAN values less than (to_date('2010-02-01','yyyy-mm-dd')),
partition P02_FEB values less than (to_date('2010-03-01','yyyy-mm-dd')),
partition P03_MAR values less than (to_date('2010-04-01','yyyy-mm-dd')),
partition P04_APR values less than (to_date('2010-05-01','yyyy-mm-dd')), 
partition P05_REST values less than (maxvalue)  
);
“Make everything as simple as possible, but not simpler” ~ Albert Einstein
Related Oracle Commands:
ALTER INDEX
ALTER VIEW
COMMENT - Add a comment to a table or a column. 
V$RESERVED_WORDS DBA_ALL_TABLES ALL_ALL_TABLES USER_ALL_TABLES DBA_TABLES ALL_TABLES USER_TABLES TAB DBA_PART_TABLES ALL_PART_TABLES USER_PART_TABLES