I'm at the part where you can write off education. I enrolled online for real estate sales person no 1098T can I deduct that here?

No.

 To be eligible for the tuition credits or tuition & fees deduction, the course must be taken at "an eligible institution". Many "real estate courses" do not qualify.  If they don't issue a 1098-T they are probably not an eligible institution. The school should be able to tell you if it is an eligible educational institution. In general, an eligible educational institution is an accredited college, university, vocational school, or other postsecondary educational institution, including accredited, public, nonprofit, and proprietary (privately-owned, profit-making) postsecondary institutions. Additionally, in order to be an eligible educational institution, the school must be eligible to participate in a student aid program administered by the Department of Education. 

Enter your school at the link below, to see if it's on the dept. of education list.

https://fafsa.ed.gov/FAFSA/app/schoolSearch?locale=en_EN

The statement "if you are already a real estate sales person you can deduct the classes as long as they are to maintain or improve your job skills, or meet a requirement of your employer or law to keep your salary, status or job" is no longer true (starting in 2018)  for W-2 employees.  The self employed can still deduct such courses as a business expense.