Creating Database - Very Confused

I am creating a very simple database,

It has 3 tables
People
Employment
Organisation

The people table contains:
surname
given name
email - primary key
phone number
course end year

Employment is the linking table it contains:
Role
start year
end year
employer email - foreign key same as email(above)
org_url - foreign key same as url (below

Organisation

orgname
add1
add2
add3
url - primary key

All I want to do is have three tables - enter a persons details in one form