Law internships

I’ve just finished my first year, and I’m curious about internships. How important are they? I’ve heard different things. Some people swear by them. Others say that a background in admin is enough??? And that the legal placement will get us a good job.

I’ve also got a shitty GPA, which is entirely my doing. I’ve not failed any of my subjects, but I have barely passed them. I know I need to look for some around 4th year, but Im so lost. How do I fix this?