After giving the TOEFL and submitting the application to college wait for the I-20 from the university once you get I-20. Pay the SEVIS fee and start the visa process by scheduling an interview and paying the interview fee.
Pay for SEVIS here and print the confirmation page of SEVIS.
NOTE: You have to bring the Confirmation page of SEVIS on the day of the Interview so please keep the confirmation page in the file. Be patient Do not pay twice for SEVIS as the fee will not be refunded by DHS (Department of Homeland Security).
Read Step#4: Fill DS-160 for F-1 Visa.