Hi Graham, Buy it as you need to, Everyone prefers different kit. some people run in tights, thermal tops, beanies in the winter, personally i don't, but you might want to. Buy it bit by bit and buy the best stuff you can afford - saying that aldi do some OK stuff if your not too worried about brands.
Don't skimp on your running shoes/trainers - get measured properly at a good local running shop where they will do a basic analysis of your running gait on a treadmill and recommend the right level of support on that basis, which brand you prefer is up to you, personally i wear Brooks - for no real reason other than they feel right.
I like running in compression under wear, keeps everything in place if you know what i mean! a good investment this time of year may be a jacket, not a lot of fun getting drenched on the first mile of your Sunday long run!! Again loads of brands about all vying to take your money, just exercise your personal taste, although hi-viz running jackets always seem like good sense to me.
As your new to running you may suffer with blisters when your mileage starts to increase, A Hilly twin sock will eliminate this, failing that coat you feet in Vaseline before longer runs.,
If you have the spare cash a good sports therapist every few weeks is a fantastic luxury, especially if you are training fairly intensively. Also falling into the graet if you can afford it bracket is a Garmin gps watch which record pace, time distance etc, or you can use an iphone strapped to your leg like millions of people do.
Most of all enjoy your running. and stay safe on dark nights.
