I've heard about hiv self testing. which one do you recommend?

Any: With free testing available I am not sure why you would want to self test.

There are a couple: There's a couple ways to go for home testing. One is a test like the OraQuick InHome test which uses oral secretions for testing but it's pretty expensive and is an antibody test so can test negative during a window of time after exposure when you might actually be positive. The other test is a mail out blood test (finger prick) called The Home Access HIV-1 and it's sensitivity is 100%. Good luck!