I passed my test. When I get my car in a few weeks, the first major trip I want to take is from Bedfordshire to Essex. AIBU to think I won't kill someone if I drive on the motorway without any lessons? 
My instructor said I should really think carefully before attempting a motorway on my own, and has strongly advised some motorway lessons.
I thought the only tricky thing would be merging on from a slip road... Otherwise should be fine, just follow the SatNav and road signs, and stay in the first lane at 60/65mph.
Maybe I am bonkers... I've spoke to a few friends and they said they just drove on motorways without any lessons for them. But they all passed years ago so maybe things were different