First, go to your profile page.
There will be a bar on the top of the page which will be in a light blue colour.
On that bar, there will be different items.
In that, visitors is one of the items.
Just click on that.
A list will come with the names of the persons who visited your profile page.
The list will also give the date on which they have visited your profile page also.
Once you see that you will know who visited and if you wish you can visit their profile page also.
Hope I have clarified your doubt.
"If you are killed in action, you go to Heaven. If you win, you rule this Earth (as beautiful as Heaven). That is why, O son of Kunti, take a firm resolve and fight!"-- Shrimad Bhagwad Gita
No life without Sun
Knowledge is power.