Here's a cover of "All By Myself" written by the late great singer/songwriter Eric Carmen, who was once also a member of the Raspberries (Go All The Way).
I know I'm not the best singer, but I purposely played it in standard tuning to match the original song (1st chord is F) in case it might help out any new guitarists out there. The few guitar lessons I saw online, mostly seemed to play it in a different key. Probably to make it easier to sing.
I also did my best to interpret the classical inspired instrumental piano piece that's in the middle of the original song. But being the hacker I am and poor finger picker, it's more of an interpretation. Maybe someone with a little more classical training can load up a guitar lesson on how to play this particular part on guitar.