I have been playing for 12 months and don't know a few of the things the original poster has said he has learnt in just 3 months but the key thing is I am happy progressing at the speed I am currently. You read and hear all the time about people who practice 8-10 hours a day every day and get really good really quickly. That's good for them but I just can't fit that in around my current lifestyle.
Also you should enjoy learning the guitar, do not turn it into a chore or practice hours and hours just because you think you should. I have always practiced until I started to get bored or loose interest, that could be after 2 hours or just 30 minutes. It's not the amount of time you spend but the quality of your practise that makes the difference so in my opinion 30 mins of good practice is better than 5 hours of bad.
