Echoing the suggestion of others, my advice to you, @smileyface, is simply to practise. Photography, like learning or speaking a foreign language, is a skill that can be easily forgotten over time if it’s not used frequently. Therefore, practice is very important.
In addition, I would highly encourage you to get involved in the forums. I have learned a lot about photography through these forums and am especially grateful to members like @jamesstaddon, @dan-cope, @buddingphotographer, @dfrazer, @abbie, and many others who have given me excellent tips and advice on photography. Ask questions and post a picture to be critiqued. As I’m only an amateur, I’m sure these guys can assist you as you take up photography again.