You don't need expensive gear but, like Deepend says, it is important that your instrument is well set up.
After that it is really up to you. The most important thing is to practise, practise, practise. I believe that the best way to do that is to learn songs - it stops you becoming bored - and that is a real risk if you spend a lot of time (as is often recommended) by endlessly practising scales.
And the other factors are what sort of guitarist you want to be and how much time you are able to commit. If you want to be say, a great jazz guitarist, you will need to practise for hours and hours (two people I know well are good jazz guitarists and when they were learning they practised for 3 to 4 hours per day minimum). I've never done anywhere near that much practising but I'm just a singer who accompanies himself on the guitar.
Whatever routine you decide upon it is so important that it is an enjoyable experience not a chore.
PS. If you haven't started to learn finger-picking yet, start now.