I am jim. I am new to guitar tricks, I took five years of private lessons and still can't play the guitar very well. I just learned amazing grace for the acoustic guitar. it sounds pretty good, I never memorized songs, I would like to learn songs by memory so I can perform them. is the guitar a hard instrument to learn?

I find guitar tricks to be a great site, I learn so much more from this site then I did from half hour and hour lessons from a private instructor at a music school. I would also like to teach beginning guitar, What do you recommend for me to use this site?
I have two electric guitars and one acoustic. I love the guitar and want to be a good guitarist,