I too started by trying the free lessons.
The free lessons are just a taster for what is on offer on Guitar Tricks.
I joined and pay by the month, believe me its well worth it.
( in our money its about £9.50 ish PM)
Follow the structered learning (fundimentals 1 + 2) then go from there.
The lessons are well planned and take you step by step and you will be stunned by how quick your playing develops.
I.m doing both acoustic( Lisa McComick) and electric lessons (Ben Lindholm and Anders Mouridsen) and aslo from Christopher Schlegel.
( I do have a lot of free time now)
All the Instructors are great at replying to any questions/problems you have via this Forum.
If, for any reason you decide that this site is not for you just tell them and stop paying, its that simple.
But I would say if my finances had permitted I would have gone for the year subscription, I have found it that good.
Hope you found this helpful.
mike