What is the correct way of inserting values in to tables and link tables in oracle?

I am currently trying to build a database but have become stuck after creating the tables. I have tried inserting values into a table but it gives me the following error:

Error starting at line : 73 in command –

INSERT INTO Project(ProjID, ProjName, ProjStartDate) VALUES (00, Project1, DATE '1900-02-14')

Error at Command Line : 73 Column : 66 Error report – SQL Error: ORA-00984: column not allowed here 00984. 00000 – “column not allowed here” *Cause:
*Action:

I am really struggling to find what is wrong with this but i am new to oracle so am not sure, any help would be greatly appreciated.

My code can be seen below:

--CREATE SCRIPTS
/*put your create scripts here – your script should not commented out*/

-- this is creating a table called Project that contains 3 variables, the primary key being ProjectID
CREATE TABLE Project
(
    ProjID integer,
    ProjName varchar(10),
    ProjStartDate date,
    primary key (ProjID)
)
-- this is creating a table called Bug that has 4 variables, BugID being the primary key 
CREATE TABLE Bug
(
    BugID integer,
    BugType varchar(10),
    BugDesc varchar(10),
    BugTime timestamp(3),
    primary key(BugID)
)

-- this is creating a table called Bug_Project with 2 variables; BugID and ProjectID which combine and make a composite key
CREATE TABLE Bug_Project
(
    BugID integer,
    ProjID integer,
    primary key(BugID, ProjID),
    foreign key(BugID) references Bug (BugID),
    foreign key(ProjID) references  Project (ProjID)
)

CREATE TABLE Engineer
(
    EngineerID integer,
    EngineerName varchar(10),
    EngineerType varchar(20),
    primary key (EngineerID)
)

CREATE TABLE Fix_Allocation
(
    EngineerID integer,
    BugID integer,
    primary key(EngineerID, BugID),
    foreign key(EngineerID) references Engineer (EngineerID),
    foreign key(BugID) references Bug (BugID)
)

CREATE TABLE Test_Allocation
(
    EngineerID integer,
    BugID integer,
    primary key(EngineerID, BugID),
    foreign key(EngineerID) references Engineer (EngineerID),
    foreign key(BugID) references Bug (BugID)
)

CREATE TABLE Note
(
    EngineerID integer,
    BugID integer,
    Note_author varchar(5),
    Note_contents varchar(20),
    primary key(EngineerID, BugID),
    foreign key(EngineerID) references Engineer (EngineerID),
    foreign key(BugID) references Bug (BugID)
)

COMMIT;
--INSERT SCRIPTS
/*put your insert scripts here – your script should not commented out */

INSERT INTO Project(ProjID, ProjName, ProjStartDate) VALUES (00, Project1, DATE '1900-02-14');

Answer

for string value use single quote otherwise that value is as column name

  INSERT INTO Project(ProjID, ProjName, ProjStartDate) 
  VALUES ( 0, 'Project1',  DATE '1900-02-14')