If it's any help, I was bought a guitar for my 70th birthday. So that gives you 20 years of practice on me.

I had some previous knowledge, however I have started off from stage 1 and have learnt loads.

I practice about 30 to 45 min a day (about as much as I can absorb and fingers can take). It's life fulfilling, no need to rush.

It is an excellent, well structured course from my observations. Prepare for the long haul, and look foreward to self satisfaction rather than instant gratification.

Cheers