I wanted to know if I can delete an individual post so tried searching for the same in the forum. I saw some posts stating that we can edit or delete a post within the first 8 hours only, which means I can't delete any of my posts now. I want to know what happens if I delete my profile? Is it going to delete all my posts? Thanks...
You can't delete your profile. You can't delete posts after the 8 hour window and mods won't delete posts unless they violate the posting guidelines.
However, you CAN "bump" a post, which will give you a new edit-window, and then delete / change the content. Since you're not a premium member, as far as I remember you can only bump one thread every... month? Or week, or something like that. So it might be worth considering whether or not the edit/change is worth it.